DISPATCH-739: Fix invalid read valgrind error in tests.
DISPATCH-739: Fix invalid read valgrind error in tests.

Changed server shutdown order so that context objects are not used after free
by logger.

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