[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/106/ : UNSTABLE in 1h 28m 56s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/97/ : SUCCESS in 3h 46m 52s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/98/ : UNSTABLE in 2h 58m 18s