[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/165/ : SUCCESS in 1h 34m 02s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/158/ : UNSTABLE in 3h 55m 36s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/157/ : SUCCESS in 3h 00m 30s