Increase journal thread priority (#4120) #1211

Job	Run time
PR Validation	7m 43s
Integration Tests	8m 25s
Backward compatibility tests	3m 42s
Bookie Tests	20m 45s
Build with windows on JDK 11	5m 18s
Client Tests	36m 50s
Compatibility Check Java8	19m 26s
Build with macos on JDK 11	5m 11s
Compatibility Check Java11	19m 55s
Compatibility Check Java17	19m 42s
OWASP Dependency Check	0s
Replication Tests	14m 34s
Remaining Tests	17m 52s
TLS Tests	12m 59s
StreamStorage Tests	19m 25s
Shell tests	32s
	3h 32m 19s

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