[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/289/ : SUCCESS in 1h 34m 34s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/282/ : SUCCESS in 3h 08m 32s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/282/ : UNSTABLE in 3h 48m 30s