Change log level to debug

[mattisonchao]

Motivation

Change the log level to debug to avoid tons of logs.

Modifications

• Change the log level to debug to avoid tons of logs.

Verifying this change

• Make sure that the change passes the CI checks.

Documentation

Check the box below.

Need to update docs?

• doc-required

  (If you need help on updating docs, create a doc issue)

• no-need-doc

  (Please explain why)

• doc

  (If this PR contains doc changes)

[codecov]

Codecov Report

Merging #1033 (c07a7bb) into master (1eccdae) will increase coverage by 0.11%.
The diff coverage is 77.77%.

❗ Current head c07a7bb differs from pull request most recent head 6b340f8. Consider uploading reports for the commit 6b340f8 to get more accurate results

@@             Coverage Diff              @@
##             master    #1033      +/-   ##
============================================
+ Coverage     77.28%   77.39%   +0.11%     
- Complexity      988     1001      +13     
============================================
  Files           111      111              
  Lines          4336     4362      +26     
  Branches        336      338       +2     
============================================
+ Hits           3351     3376      +25     
- Misses          802      805       +3     
+ Partials        183      181       -2     

Files Changed	Coverage Δ
...e/pulsar/handlers/mqtt/MQTTChannelInitializer.java	64.58% <ø> (ø)
...ndlers/mqtt/proxy/MQTTProxyChannelInitializer.java	61.53% <ø> (ø)
...ive/pulsar/handlers/mqtt/support/MQTTConsumer.java	97.61% <ø> (ø)
...lsar/handlers/mqtt/support/Qos0PublishHandler.java	62.50% <0.00%> (-8.93%)	⬇️
...upport/systemtopic/MQTTEventSystemTopicClient.java	57.69% <ø> (-5.77%)	⬇️
...ystemtopic/SystemTopicBasedSystemEventService.java	79.03% <70.00%> (-0.63%)	⬇️
...lsar/handlers/mqtt/support/Qos1PublishHandler.java	48.00% <75.00%> (+0.05%)	⬆️
...andlers/mqtt/proxy/PulsarServiceLookupHandler.java	64.76% <80.00%> (+0.68%)	⬆️
...dlers/mqtt/support/event/AutoSubscribeHandler.java	81.13% <85.71%> (+0.28%)	⬆️
...lers/mqtt/support/event/PulsarEventCenterImpl.java	87.50% <86.66%> (-4.50%)	⬇️
... and 2 more

... and 6 files with indirect coverage changes

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more