Fix Random PG TestPatternBoundedQueuingChronicle.producersAndConsumersConcurrently

Regression

Run unit tests / Run postgresql unit tests / org.nuxeo.lib.stream.tests.pattern.TestPatternBoundedQueuingChronicle.producersAndConsumersConcurrently
Failing for the past 1 build (Since Failed#637 )
Took 6 sec.
add description
Error Message

expected:<15000> but was:<13000>

Stacktrace

java.lang.AssertionError: expected:<15000> but was:<13000>
	at org.junit.Assert.fail(Assert.java:89)
	at org.junit.Assert.failNotEquals(Assert.java:835)
	at org.junit.Assert.assertEquals(Assert.java:647)
	at org.junit.Assert.assertEquals(Assert.java:633)
	at org.nuxeo.lib.stream.tests.pattern.TestPatternBoundedQueuing.producersAndConsumersConcurrently(TestPatternBoundedQueuing.java:122)

2020-09-11 23:08:47,266 [Nuxeo-ConsumerPool-00] WARN  [Slf4jExceptionHandler$2] Took 3 ms to add mapping for target-postgresql/junit5097951718192540867/junit12060547623164568658/logName/offset-default/metadata.cq4t
2020-09-11 23:08:47,267 [Nuxeo-Producer-10-18-Random message 18] WARN  [Slf4jExceptionHandler$2] Couldn't acquire write lock after 15000ms for the lock file:target-postgresql/junit5097951718192540867/junit12060547623164568658/logName/P-06/metadata.cq4t, overriding the lock. Lock was held by me

2020-09-11 23:08:47,269 [Nuxeo-Producer-10-18-Random message 18] WARN  [Slf4jExceptionHandler$2] Forced unlock for the lock file:target-postgresql/junit5097951718192540867/junit12060547623164568658/logName/P-06/metadata.cq4t, unlocked: true
net.openhft.chronicle.core.StackTrace: Forced unlock on Nuxeo-Producer-10-18-Random message 18

2020-09-11 23:08:47,512 [Nuxeo-ConsumerPool-00] INFO  [ChronicleLogOffsetTracker] Invalid offset tailer state: /home/jenkins/workspace/nuxeo_nuxeo_master/modules/platform/nuxeo-platform-importer/nuxeo-importer-stream/target-postgresql/junit5097951718192540867/junit12060547623164568658/logName/offset-default: BEYOND_START_OF_CYCLE taken as uninitialized
2020-09-11 23:08:47,512 [Nuxeo-Producer-10-35-Random message 35] ERROR [AbstractCallablePool] Exception catch in runner: Data was written after the end of the message, zero out data before rewinding [pos: 132856, rlim: 132856, wlim: 1181356, cap: 140737488355328 ] xeo.lib.stream.pattern.KeyValueMessage\u0082\u0015٠٠٠ñRandom message 16°°٠ǁ‡L٠٠٠Ãmsg¶,org.nuxeo.lib.stream.pattern.KeyValueMessage\u0082\u0015٠٠٠ñRand

2020-09-11 23:08:48,228 [Nuxeo-ProducerPool-00] INFO  [ArrayList] Producer status FAILURE