[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/170/ : SUCCESS in 1h 35m 06s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/163/ : UNSTABLE in 3h 28m 32s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/162/ : SUCCESS in 2h 51m 30s