[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/110/ : SUCCESS in 1h 38m 11s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/101/ : UNSTABLE in 2h 48m 21s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/102/ : UNSTABLE in 3h 24m 13s