[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/129/ : SUCCESS in 1h 38m 41s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/121/ : UNSTABLE in 3h 19m 27s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/121/ : FAILURE in 2s