[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/230/ : SUCCESS in 1h 37m 55s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/223/ : SUCCESS in 3h 43m 27s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/222/ : UNSTABLE in 4h 34m 15s