[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/132/ : SUCCESS in 1h 39m 26s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/124/ : SUCCESS in 2h 51m 11s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/124/ : UNSTABLE in 3h 28m 01s