[BP-62] LedgerHandle introduces batch read API. #1334

Job	Run time
PR Validation	7m 59s
Backward compatibility tests	4m 35s
Bookie Tests	18m 52s
Client Tests	39m 35s
Integration Tests	7m 57s
Compatibility Check Java8	19m 28s
Replication Tests	24m 36s
Build with macos on JDK 11	7m 52s
Remaining Tests	18m 1s
Compatibility Check Java11	20m 15s
TLS Tests	13m 6s
Build with windows on JDK 11	6m 41s
Compatibility Check Java17	19m 10s
StreamStorage Tests	18m 32s
Shell tests	23s
OWASP Dependency Check	0s
	3h 47m 2s

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