Add delay to allow for ZooKeeper, Update prop names

[EdColeman]

The ExternalCompaction tests seem to fail occasionally with the compaction coordinator unable to read information from ZooKeeper to create the metrics used in the test.

• Adds a delay with a back off initializing metrics to allow more time for the test cluster ZooKeeper to start up.
• Modifies the compaction service property names to align with changes in #3915 (reduces deprecated property name logging)

This seems to be a partial fix and there seem to be other issues running the tests reliably.

• test still occasionally hang (seems prevalent running in an IDE with ExternalCompaction_2_IT ) this was the most recent Jenkins failure, so this test was run more so it could be generic to the other tests.
• some of the tests may be passing with a false positive. Sometimes the following is in the logs:

ExternalCompaction_2_IT. testDeleteTableCancelsUserExternalCompaction:
2023-11-26T20:35:52,091 [lock.ServiceLock] WARN : Child found with invalid format: wsn2:9133 (does not start with zlock#)

These issues can be a follow-up if these changes are accepted before those are resolved.

[dlmarion]

2023-11-26T20:35:52,091 [lock.ServiceLock] WARN : Child found with invalid format: wsn2:9133 (does not start with zlock#)

I have been noticing this too in the elasticity branch. Interesting to see that it's in main also. I'm going to try and track this down.

[dlmarion]

2023-11-26T20:35:52,091 [lock.ServiceLock] WARN : Child found with invalid format: wsn2:9133 (does not start with zlock#)

I have been noticing this too in the elasticity branch. Interesting to see that it's in main also. I'm going to try and track this down.

Looks like I introduced this in #3951 . Working on a fix.

[EdColeman]

Closing in favor of #4210