[FLINK-32503] FLIP-285 technical debt - ASF JIRA

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This Jira issue collects any technical debt related to the FLIP-285 efforts that were introduced with ~~FLINK-26522~~

is caused by

FLINK-26522 FLIP-285: Refactoring code for multiple component leader election

1.	Remove AbstractLeaderElectionService	Resolved	Wencong Liu
2.	DefaultLeaderElectionService#running field can be removed	Closed	Unassigned
3.	Move LeaderElectionDriver instantiated into DefaultLeaderElectionService.register to instantiate the driver lazily	Resolved	Matthias Pohl
4.	Merge AbstractZooKeeperHaServices and ZooKeeperMultipleComponentLeaderElectionHaServices	Resolved	Matthias Pohl
5.	Remove obsolete LeaderContender.getDescription method	Resolved	Matthias Pohl
6.	EmbeddedLeaderService doesn't handle the leader events properly in edge cases	In Progress	Matthias Pohl
7.	Merge testing implementations of LeaderContender	In Progress	Matthias Pohl
8.	Replaces LeaderConnectionInfo with LeaderInformation	Resolved	Jiadong Lu
9.	Merge MultipleComponentsLeaderElectionDriver methods notifyAllKnownLeaderInformation and notifyLeaderInformationChange into a single method and	Closed	Unassigned
10.	Refactor EmbeddedLeaderElectionService	Open	Unassigned
11.	Align lock usage in DefaultLeaderElectionService	Open	Unassigned