[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/304/ : SUCCESS in 1h 46m 06s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/297/ : SUCCESS in 4h 40m 35s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/2/ : UNSTABLE in 3h 19m 52s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/297/ : UNSTABLE in 4h 22m 30s