Add description param to v3 service create/update
Add description param to v3 service create/update

Adding description to V3 services.create and service
update as an explicitly enumerated keyword argument

Change-Id: I5e51c8e47d0d6cfc448a6a72e08f27f71d9c80ec
Closes-Bug: #1188723

sdpp/python-keystoneclient,Mercador/python-keystoneclient,alexpilotti/python-keystoneclient,darren-wang/ksc,ging/python-keystoneclient,jamielennox/python-keystoneclient,klmitch/python-keystoneclient,magic0704/python-keystoneclient,darren-wang/ksc,sdpp/python-keystoneclient,magic0704/python-keystoneclient,jamielennox/python-keystoneclient,alexpilotti/python-keystoneclient,klmitch/python-keystoneclient,jamielennox/python-keystoneclient,Mercador/python-keystoneclient,ging/python-keystoneclient