[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/134/ : SUCCESS in 1h 31m 21s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/126/ : UNSTABLE in 3h 20m 07s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/126/ : UNSTABLE in 4h 14m 52s