PROTON-1273: Don't hardcode port 12345 in Python messenger tests
PROTON-1273: Don't hardcode port 12345 in Python messenger tests

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