[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/262/ : SUCCESS in 1h 40m 06s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/255/ : UNSTABLE in 3h 34m 46s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/255/ : UNSTABLE in 3h 03m 37s