[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/181/ : SUCCESS in 1h 38m 29s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/174/ : UNSTABLE in 2h 56m 42s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/173/ : SUCCESS in 3h 42m 52s