when setExplicitLac is called the ledgersCount should increased (#4138) #1159

Job	Run time
PR Validation	7m 32s
Bookie Tests	21m 2s
Client Tests	36m 59s
Replication Tests	15m 38s
Backward compatibility tests	3m 33s
Integration Tests	9m 31s
Remaining Tests	17m 56s
Compatibility Check Java8	19m 22s
TLS Tests	12m 59s
Compatibility Check Java11	20m 39s
Build with macos on JDK 11	5m 41s
StreamStorage Tests	18m 36s
Build with windows on JDK 11	6m 5s
Compatibility Check Java17	19m 16s
Shell tests	34s
OWASP Dependency Check	0s
	3h 35m 23s

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