[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/121/ : SUCCESS in 1h 43m 11s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/112/ : UNSTABLE in 4h 10m 19s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/113/ : UNSTABLE in 2h 57m 23s