Attempt to stabilize integration tests

[tishun]

Addressing several stability issues with the pipeline:

1. Failing Integration tests would not fail the pipeline checks - this resulted in several tests constantly failing, and the number was rising. To address this I've added the failsafe plugin to the verify step, as suggested by the Maven best manual
2. Removed the -B option in the Makefile to improve readability in the logs
3. Modified the io.lettuce.core.SslIntegrationTests.pubSubSsl to attempt to verify the re-subscription process for a longer period of time, as it seems on the runners it takes more than 10 seconds (more than 60 seconds really)
4. Modified the io.lettuce.core.cluster.pubsub.RedisClusterPubSubConnectionIntegrationTests.subscribeToShardChannelViaOtherEndpoint to instead test replica scenario, see discussion below
5. Finished and enabled the testRegularClientPubSubShardChannels test

Make sure that:

• You have read the contribution guidelines.
• You have created a feature request first to discuss your contribution intent. Please reference the feature request ticket number in the pull request.
• You use the code formatters provided here and have them applied to your changes. Don’t submit any formatting related changes.
• You submit test cases (unit or integration tests) that back your changes.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.74%. Comparing base (43843bf) to head (40c29d8).
Report is 250 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2825      +/-   ##
============================================
- Coverage     78.71%   77.74%   -0.97%     
- Complexity     6786     7244     +458     
============================================
  Files           508      539      +31     
  Lines         22765    24494    +1729     
  Branches       2446     2607     +161     
============================================
+ Hits          17919    19044    +1125     
- Misses         3717     4257     +540     
- Partials       1129     1193      +64     

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[atakavci]

left some comments to include the tests back.

[atakavci]

looks good, thanks for tailoring the listener bits.