[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/221/ : SUCCESS in 1h 58m 54s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/214/ : UNSTABLE in 3h 43m 55s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/213/ : UNSTABLE in 3h 00m 59s