Make parameter doc RDoc compatible

The patch fixes the parameter documentation in
api, cert, compute and client to conform with
the style guide and support autogenerating
paramter documentation.

Change-Id: I94c6807a18be5eb27697eaa060a0e885a7d44cbe
Rename unit tests from Quantum to Neutron

Change-Id: I1363f15636f16be9d3dee3e7b0063fbac5d2ed56
Signed-off-by: Emilien Macchi <emilien.macchi@enovance.com>
Merge git://github.com/puppetlabs/puppetlabs-nova