[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/238/ : SUCCESS in 1h 46m 13s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/231/ : SUCCESS in 3h 35m 42s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/231/ : UNSTABLE in 2h 57m 23s