Update broker responses to match spec and SO

Update broker responses to match spec and SO

The broker responses need to match the spec and
what SO expects as responses.
CREATE_COMPLETE instead of CREATED in both POST and GET
DELETE now returns a response body
GET by name is now supported
Name is an alias for vf_module_id which is expected to be provided
as an attribute in sdnc_directives in the original POST request

Issue-ID: MULTICLOUD-645
Change-Id: Ifeca755a07298d0a858cbe9e80f9ce654d6d21b8
Signed-off-by: Kiran Kamineni <kiran.k.kamineni@intel.com>