[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/240/ : SUCCESS in 1h 37m 28s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/233/ : FAILURE in 4h 58m 03s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/233/ : UNSTABLE in 4h 12m 35s