[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/157/ : SUCCESS in 1h 37m 08s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/150/ : UNSTABLE in 3h 35m 00s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/149/ : UNSTABLE in 4h 00m 20s