[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/161/ : SUCCESS in 1h 39m 35s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/154/ : UNSTABLE in 3h 57m 40s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/153/ : SUCCESS in 2h 55m 34s