Add test for OS::Neutron::Router Heat resource

Added a test that checks that a OS::Neutron::Router is created
correctly.
Replaced all OS::Quantum with OS::Neutron.
Replaced all Ref with get_param or get_resource.
Lower case instead of Upper case when applies.

Change-Id: I9f4828eee8517422847c05fbb45530699abe8e96
Partial-Bug: #1269569
Merge "Add test for OS::Neutron::Router Heat resource"