[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/273/ : UNSTABLE in 1h 40m 24s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/266/ : SUCCESS in 3h 33m 57s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/266/ : SUCCESS in 4h 34m 25s