NO-JIRA: cpp: Add correct valgrind flags to example_test.py script.
NO-JIRA: cpp: Add correct valgrind flags to example_test.py script.

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