[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/114/ : SUCCESS in 1h 37m 30s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/105/ : UNSTABLE in 3h 28m 49s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/106/ : SUCCESS in 2h 51m 04s