Printout cli result in CLI BDD tests

Add some print to show cli result. Help to find error when tests failed.

Change-Id: Ia55850156af8d4786c64ace330bc45864c87a391
Signed-off-by: jiangyaoguo <jiangyaoguo@gmail.com>

bddtests/steps/peer_cli_impl.py

@@ -21,7 +21,11 @@
 
 @when(u'I execute "{command}" in container {containerName}')
 def step_impl(context, command, containerName):
+    print("Run command: \"{0}\" in container {1}".format(command, containerName))
     executeCommandInContainer(context, command, containerName)
+    print("stdout: {0}".format(context.command["stdout"]))
+    print("stderr: {0}".format(context.command["stderr"]))
+    print("returnCode: {0}".format(context.command["returnCode"]))
 
 def executeCommandInContainer(context, command, container):
     fullContainerName = fullNameFromContainerNamePart(container, context.compose_containers)