This starts the nova-metadata-api service on the compute
nodes when nova-networking is leveraged. This it seems that
in the compute node with nova-networking the service doesn't
start, this patch starts it up and allows for the local machines
to access the metadata-api.
This also updates the test so it confirms that the correct
process starts.
Change-Id: I22e0173eab746d54ec50ab9231e75705874ee973