Configure bash completion

Add bash completion rules to the /etc/bash_completion.d from the
 cinder, neutron, keystone, nova and nova-manage.

This is very fast operation and makes the cli usage easier.

Change-Id: Icdcdaf55d58efaaa1afe25fd55f088bf7dc8b3f1
diff --git a/lib/keystone b/lib/keystone
index e7e0544..0a35dd5 100644
--- a/lib/keystone
+++ b/lib/keystone
@@ -289,6 +289,7 @@
 function install_keystoneclient() {
     git_clone $KEYSTONECLIENT_REPO $KEYSTONECLIENT_DIR $KEYSTONECLIENT_BRANCH
     setup_develop $KEYSTONECLIENT_DIR
+    sudo install -D -m 0644 -o $STACK_USER {$KEYSTONECLIENT_DIR/tools/,/etc/bash_completion.d/}keystone.bash_completion
 }
 
 # install_keystone() - Collect source and prepare