Task #8899: Use bash, not sh, to be able to source files from $PATH

LCS/Messaging/python/messaging/test/t_service_message_handler.run

-#!/bin/sh -e
+#!/bin/bash -e
 
 #cleanup on normal exit and on SIGHUP, SIGINT, SIGQUIT, and SIGTERM
 trap 'qpid-config del exchange --force $queue' 0 1 2 3 15