[BP-62] LedgerHandle introduces batch read API. #1347

Job	Run time
PR Validation	7m 36s
Bookie Tests	20m 54s
Client Tests	40m 5s
Backward compatibility tests	3m 49s
Build with windows on JDK 11	7m 15s
Integration Tests	6m 46s
Replication Tests	26m 9s
Remaining Tests	17m 50s
Compatibility Check Java8	19m 31s
Build with macos on JDK 11	5m 36s
TLS Tests	13m 13s
Compatibility Check Java11	20m 7s
StreamStorage Tests	18m 27s
Compatibility Check Java17	19m 17s
Shell tests	24s
OWASP Dependency Check	0s
	3h 46m 59s

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