[Improvement] fix string comparison in ZkClusterInitializer #2222

Job	Run time
PR Validation	8m 16s
Typo Check	7s
Build with windows on JDK 11	5m 50s
Integration Tests	19m 10s
Backward compatibility tests	31m 57s
Compatibility Check Java8	19m 0s
Compatibility Check Java11	19m 49s
Build with macos on JDK 11	2m 3s
Compatibility Check Java17	18m 57s
Bookie Tests	17m 34s
Compatibility Check Java21	19m 5s
Client Tests	27m 1s
Replication Tests	26m 48s
Remaining Tests	18m 56s
OWASP Dependency Check	0s
TLS Tests	9m 47s
StreamStorage Tests	18m 28s
Shell tests	22s
BookKeeper CI checks completed	1s
	4h 23m 11s

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