[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/215/ : UNSTABLE in 1h 42m 55s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/208/ : SUCCESS in 3h 31m 39s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/207/ : UNSTABLE in 3h 02m 01s