BmpMockTest#testMainInPassiveMode() fails occasionally on jenkins

Log snippet from https://jenkins.opendaylight.org/releng/job/bgpcep-verify-boron-mvn33-openjdk8/77/console:

Tests run: 2, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 11.931 sec <<< FAILURE! - in org.opendaylight.protocol.bmp.mock.BmpMockTest
testMainInPassiveMode(org.opendaylight.protocol.bmp.mock.BmpMockTest) Time elapsed: 5.449 sec <<< FAILURE!
org.mockito.exceptions.verification.WantedButNotInvoked:
Wanted but not invoked:
bmpSessionListener.onSessionUp(<any>);
-> at org.opendaylight.protocol.bmp.mock.BmpMockTest.testMainInPassiveMode(BmpMockTest.java:92)
Actually, there were zero interactions with this mock.

at org.opendaylight.protocol.bmp.mock.BmpMockTest.testMainInPassiveMode(BmpMockTest.java:92)

Running org.opendaylight.protocol.bmp.mock.BmpMockUtilTest
Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.122 sec - in org.opendaylight.protocol.bmp.mock.BmpMockUtilTest

Results :

Failed tests:
BmpMockTest.testMainInPassiveMode:92
Wanted but not invoked:
bmpSessionListener.onSessionUp(<any>);
-> at org.opendaylight.protocol.bmp.mock.BmpMockTest.testMainInPassiveMode(BmpMockTest.java:92)
Actually, there were zero interactions with this mock.