[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/138/ : SUCCESS in 1h 32m 40s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/130/ : UNSTABLE in 3h 19m 53s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/130/ : UNSTABLE in 3h 58m 12s