[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/290/ : SUCCESS in 1h 43m 22s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/283/ : UNSTABLE in 3h 08m 49s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/283/ : UNSTABLE in 3h 13m 13s