[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/116/ : SUCCESS in 1h 38m 12s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/107/ : UNSTABLE in 2h 45m 01s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/108/ : SUCCESS in 3h 58m 06s