Update logging to debug to reduce spew

[deepakkinni]

What this PR does / why we need it:
While triaging Perf bug, noticed the whole syncer logs littered with info level messages regarding kubeconfig. Reducing it to debug level.

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Testing done:
syncer logs:

{"level":"info","time":"2024-09-27T17:49:01.398998633Z","caller":"storagepool/intended_state.go:359","msg":"Updating StoragePool instance for storagepool-vsandatastore-cluster1","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"bc58fa87-6d56-4473-8785-262283067d95"}
{"level":"info","time":"2024-09-27T17:49:01.405006792Z","caller":"kubernetes/kubernetes.go:107","msg":"Kubeconfig flag is set but empty, checking environment variable value","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"bc58fa87-6d56-4473-8785-262283067d95"}
{"level":"info","time":"2024-09-27T17:49:01.405045154Z","caller":"kubernetes/kubernetes.go:115","msg":"Kubeconfig path obtained from environment variable \"KUBECONFIG\": \"\"","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"bc58fa87-6d56-4473-8785-262283067d95"}
{"level":"info","time":"2024-09-27T17:49:01.405055714Z","caller":"kubernetes/kubernetes.go:120","msg":"No Kubeconfig path found, either from environment variable or flag","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"bc58fa87-6d56-4473-8785-262283067d95"}
{"level":"info","time":"2024-09-27T17:49:01.4050643Z","caller":"kubernetes/kubernetes.go:82","msg":"k8s client using in-cluster config","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"bc58fa87-6d56-4473-8785-262283067d95"}
{"level":"info","time":"2024-09-27T17:49:01.405222678Z","caller":"kubernetes/kubernetes.go:434","msg":"Setting client QPS to 200.000000 and Burst to 200.","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"bc58fa87-6d56-4473-8785-262283067d95"}
{"level":"info","time":"2024-09-27T17:49:01.408598523Z","caller":"kubernetes/kubernetes.go:107","msg":"Kubeconfig flag is set but empty, checking environment variable value","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"bc58fa87-6d56-4473-8785-262283067d95"}
{"level":"info","time":"2024-09-27T17:49:01.408633639Z","caller":"kubernetes/kubernetes.go:115","msg":"Kubeconfig path obtained from environment variable \"KUBECONFIG\": \"\"","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"bc58fa87-6d56-4473-8785-262283067d95"}



{"level":"info","time":"2024-09-27T17:47:00.688865991Z","caller":"syncer/fullsync.go:1217","msg":"FullSync for VC w1hs5-testvc3.eng.vmware.com: update is not required for volume: \"cee3ba3d-12e9-4bd6-b1fe-78c43cd7a556\"","TraceId":"43fdb55e-db1f-4740-a2c0-3e15b91b1eaa"}
{"level":"info","time":"2024-09-27T17:47:00.689138304Z","caller":"syncer/fullsync.go:1217","msg":"FullSync for VC w1hs5-testvc3.eng.vmware.com: update is not required for volume: \"6b45b9e5-8291-48ab-becf-1f11543dbcff\"","TraceId":"43fdb55e-db1f-4740-a2c0-3e15b91b1eaa"}
{"level":"info","time":"2024-09-27T17:47:00.68941762Z","caller":"syncer/fullsync.go:1217","msg":"FullSync for VC w1hs5-testvc3.eng.vmware.com: update is not required for volume: \"4ea84130-313d-4091-bbac-4b9b90b0a9cb\"","TraceId":"43fdb55e-db1f-4740-a2c0-3e15b91b1eaa"}
{"level":"info","time":"2024-09-27T17:47:00.689695583Z","caller":"syncer/fullsync.go:1217","msg":"FullSync for VC w1hs5-testvc3.eng.vmware.com: update is not required for volume: \"5d043629-9832-4a95-8181-0481e3ba9d11\"","TraceId":"43fdb55e-db1f-4740-a2c0-3e15b91b1eaa"}
{"level":"info","time":"2024-09-27T17:47:00.689962005Z","caller":"syncer/fullsync.go:1217","msg":"FullSync for VC w1hs5-testvc3.eng.vmware.com: update is not required for volume: \"e3e22883-6cde-4c4a-a4aa-dee28d01a121\"","TraceId":"43fdb55e-db1f-4740-a2c0-3e15b91b1eaa"}


{"level":"info","time":"2024-09-27T17:46:58.265800406Z","caller":"syncer/fullsync.go:790","msg":"Received aggregatedSnapshotCapacity 0 for volume \"daa35fda-2321-4d61-be4e-2871a514a3de\"","TraceId":"43fdb55e-db1f-4740-a2c0-3e15b91b1eaa"}
{"level":"info","time":"2024-09-27T17:46:58.265827377Z","caller":"syncer/fullsync.go:782","msg":"validate volume info for storage details for volume 6e254da9-57a1-4e04-a637-77bfe43daa93","TraceId":"43fdb55e-db1f-4740-a2c0-3e15b91b1eaa"}
{"level":"info","time":"2024-09-27T17:46:58.26583473Z","caller":"syncer/fullsync.go:790","msg":"Received aggregatedSnapshotCapacity 0 for volume \"6e254da9-57a1-4e04-a637-77bfe43daa93\"","TraceId":"43fdb55e-db1f-4740-a2c0-3e15b91b1eaa"}
{"level":"info","time":"2024-09-27T17:46:58.265863695Z","caller":"syncer/fullsync.go:782","msg":"validate volume info for storage details for volume fa46ef09-bed3-4f02-94b2-406d52e08431","TraceId":"43fdb55e-db1f-4740-a2c0-3e15b91b1eaa"}
{"level":"info","time":"2024-09-27T17:46:58.26587154Z","caller":"syncer/fullsync.go:790","msg":"Received aggregatedSnapshotCapacity 0 for volume \"fa46ef09-bed3-4f02-94b2-406d52e08431\"","TraceId":"43fdb55e-db1f-4740-a2c0-3e15b91b1eaa"}
{"level":"info","time":"2024-09-27T17:46:58.265899162Z","caller":"syncer/fullsync.go:782","msg":"validate volume info for storage details for volume f495b2d0-9b99-4156-b901-8bc29e3b8963","TraceId":"43fdb55e-db1f-4740-a2c0-3e15b91b1eaa"}
{"level":"info","time":"2024-09-27T17:46:58.265905143Z","caller":"syncer/fullsync.go:790","msg":"Received aggregatedSnapshotCapacity 0 for volume \"f495b2d0-9b99-4156-b901-8bc29e3b8963\"","TraceId":"43fdb55e-db1f-4740-a2c0-3e15b91b1eaa"}
{"level":"info","time":"2024-09-27T17:46:58.265931483Z","caller":"syncer/fullsync.go:782","msg":"validate volume info for storage details for volume 8bf32915-022d-43f4-938a-f4451b95399f","TraceId":"43fdb55e-db1f-4740-a2c0-3e15b91b1eaa"}
{"level":"info","time":"2024-09-27T17:46:58.265937564Z","caller":"syncer/fullsync.go:790","msg":"Received aggregatedSnapshotCapacity 0 for volume \"8bf32915-022d-43f4-938a-f4451b95399f\"","TraceId":"43fdb55e-db1f-4740-a2c0-3e15b91b1eaa"}
{"level":"info","time":"2024-09-27T17:46:58.265965006Z","caller":"syncer/fullsync.go:782","msg":"validate volume info for storage details for volume b01ee2ca-45d0-409f-97f2-a5085bdaf525","TraceId":"43fdb55e-db1f-4740-a2c0-3e15b91b1eaa"}

{"level":"info","time":"2024-09-27T17:21:58.849709366Z","caller":"storagepool/intended_state.go:326","msg":"Host w1-hs5-b0209.eng.vmware.com has capacity &{Capacity:11522235432960 CapacityReserved:94136958976 CapacityUsed:265617512857 HostMoID:host-22}","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"f263a631-00b0-4db7-bc9f-5c04f17f862f"}
{"level":"info","time":"2024-09-27T17:21:58.870455693Z","caller":"storagepool/intended_state.go:326","msg":"Host w1-hs5-b0207.eng.vmware.com has capacity &{Capacity:11522235432960 CapacityReserved:59437481984 CapacityUsed:252187351449 HostMoID:host-13}","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"f263a631-00b0-4db7-bc9f-5c04f17f862f"}
{"level":"info","time":"2024-09-27T17:21:58.870473897Z","caller":"storagepool/intended_state.go:231","msg":"creating vsan sna sp \"w1-hs5-b0208.eng.vmware.com\"","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"f263a631-00b0-4db7-bc9f-5c04f17f862f"}
{"level":"info","time":"2024-09-27T17:21:58.873814679Z","caller":"storagepool/intended_state.go:359","msg":"Updating StoragePool instance for storagepool-vsandatastore-cluster1-w1-hs5-b0208.eng.vmware.com","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"f263a631-00b0-4db7-bc9f-5c04f17f862f"}
{"level":"info","time":"2024-09-27T17:21:58.878843776Z","caller":"storagepool/intended_state.go:231","msg":"creating vsan sna sp \"w1-hs5-b0209.eng.vmware.com\"","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"f263a631-00b0-4db7-bc9f-5c04f17f862f"}
{"level":"info","time":"2024-09-27T17:21:58.882279125Z","caller":"storagepool/intended_state.go:359","msg":"Updating StoragePool instance for storagepool-vsandatastore-cluster1-w1-hs5-b0209.eng.vmware.com","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"f263a631-00b0-4db7-bc9f-5c04f17f862f"}
{"level":"info","time":"2024-09-27T17:21:58.888026588Z","caller":"storagepool/intended_state.go:231","msg":"creating vsan sna sp \"w1-hs5-b0207.eng.vmware.com\"","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"f263a631-00b0-4db7-bc9f-5c04f17f862f"}
{"level":"info","time":"2024-09-27T17:21:58.891290837Z","caller":"storagepool/intended_state.go:359","msg":"Updating StoragePool instance for storagepool-vsandatastore-cluster1-w1-hs5-b0207.eng.vmware.com","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"f263a631-00b0-4db7-bc9f-5c04f17f862f"}
{"level":"info","time":"2024-09-27T17:21:58.903848556Z","caller":"storagepool/listener.go:210","msg":"Scheduled ReconcileAllStoragePools completed","TraceId":"99b6da0e-87b5-4888-8891-ed851adca593","TraceId":"f263a631-00b0-4db7-bc9f-5c04f17f862f"}
{"level":"info","time":"2024-09-27T17:21:59.373867534Z","caller":"syncer/volume_health.go:127","msg":"GetVolumeHealthStatus: end","TraceId":"8f542ddd-b57b-4ffe-a1ac-128bd294fd90"}

Unit tests.

Special notes for your reviewer:

Release note:

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