[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/183/ : SUCCESS in 1h 51m 26s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/176/ : UNSTABLE in 3h 26m 55s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/175/ : SUCCESS in 3h 44m 05s