[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/214/ : SUCCESS in 1h 43m 07s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/207/ : UNSTABLE in 3h 31m 41s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/206/ : UNSTABLE in 3h 49m 40s