fix rabbitmq userdata template to create metadata
fix rabbitmq userdata template to create metadata

A metadata file is created by the install_rabbit.sh script, which is
being supplied by userdata properly.  However, the directory that the
script tries to populate does not seem to exist.  Fixing script template
to create the entire directory hierarchy rather than just the specific
directory.

Change-Id: I3160d0a1dc29025e2aae17549a67e1b16422c527
Closes-Bug: 1453266

openstack/cue,openstack/cue,stackforge/cue,openstack/cue,stackforge/cue,stackforge/cue