[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/112/ : SUCCESS in 1h 31m 29s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/103/ : UNSTABLE in 3h 27m 30s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/104/ : UNSTABLE in 3h 24m 54s