NO-JIRA: extend test timeout for s390x platform
NO-JIRA: extend test timeout for s390x platform

This closes #1171

kgiusti/dispatch,apache/dispatch,mgoulish/qpid-dispatch,ChugR/qpid-dispatch,mgoulish/qpid-dispatch,ted-ross/qpid-dispatch,ErnieAllen/qpid-dispatch,mgoulish/qpid-dispatch,apache/dispatch,apache/dispatch,apache/dispatch,apache/qpid-dispatch,ChugR/qpid-dispatch,ChugR/qpid-dispatch,ted-ross/qpid-dispatch,mgoulish/qpid-dispatch,ChugR/qpid-dispatch,ErnieAllen/qpid-dispatch,kgiusti/dispatch,apache/qpid-dispatch,ErnieAllen/qpid-dispatch,ErnieAllen/qpid-dispatch,apache/qpid-dispatch,ted-ross/qpid-dispatch,apache/qpid-dispatch,ChugR/qpid-dispatch,ted-ross/qpid-dispatch,ChugR/qpid-dispatch,mgoulish/qpid-dispatch,kgiusti/dispatch,ErnieAllen/qpid-dispatch,apache/dispatch,kgiusti/dispatch,kgiusti/dispatch,apache/qpid-dispatch,ErnieAllen/qpid-dispatch,mgoulish/qpid-dispatch,ted-ross/qpid-dispatch,kgiusti/dispatch,apache/dispatch,apache/qpid-dispatch,ted-ross/qpid-dispatch,apache/dispatch