NO-JIRA: Extend timeout on proton_tests/reactor.py test_schedule_cancel
NO-JIRA: Extend timeout on proton_tests/reactor.py test_schedule_cancel

Avoid false failures on slow CI machines.

astitcher/qpid-proton,ssorj/qpid-proton,ssorj/qpid-proton,ssorj/qpid-proton,ChugR/qpid-proton,gemmellr/qpid-proton,kgiusti/qpid-proton,kgiusti/qpid-proton,ssorj/qpid-proton,gemmellr/qpid-proton,gemmellr/qpid-proton,astitcher/qpid-proton,ChugR/qpid-proton,gemmellr/qpid-proton,astitcher/qpid-proton,astitcher/qpid-proton,astitcher/qpid-proton,kgiusti/qpid-proton,apache/qpid-proton,gemmellr/qpid-proton,astitcher/qpid-proton,ChugR/qpid-proton,gemmellr/qpid-proton,ssorj/qpid-proton,kgiusti/qpid-proton,kgiusti/qpid-proton,apache/qpid-proton,ssorj/qpid-proton,apache/qpid-proton,ChugR/qpid-proton,kgiusti/qpid-proton,ChugR/qpid-proton,apache/qpid-proton,apache/qpid-proton,apache/qpid-proton,ChugR/qpid-proton