FRR IBGP Single hop Verify that the BGP status is correctly updated in the FRRNodeState [frrk8s, 74280, test_id:74280]

[gkopels]

This test cases is failing in 4.17. Apparently there was some type of change with how the metallb.ListFrrNodeState is returning the data.
frrNodeState, err := metallb.ListFrrNodeState(APIClient)
It is returned as a list.
Beforehand the first index in the list started with worker0 now it starts with the masters frrNodeState[0].Object.Status.RunningConfig
So changing to frrNodeState[3].Object.Status.RunningConfig represents worker 0 and
frrNodeState[4].Object.Status.RunningConfig represents worker-1.
I will speak to dev about this change before creating a PR to fix the issue

[gkopels]

Fix PR #283