PROTON-1231: python BlockingConnection hides disconnect error info
PROTON-1231: python BlockingConnection hides disconnect error info

Added the transport.condition error to the exception thrown on disconnect.

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