[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/153/ : SUCCESS in 1h 33m 53s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/146/ : UNSTABLE in 3h 23m 08s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/145/ : SUCCESS in 3h 59m 22s