[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/252/ : SUCCESS in 1h 43m 20s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/245/ : UNSTABLE in 3h 34m 18s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/245/ : UNSTABLE in 4h 36m 58s