Store NB Create req. userParam - Customer_Location

Store NB Create req. userParam - Customer_Location

1. Additional user param Customer_Location needs to
be passed and stored for use later in communication
to OOF for homing/placement.

2. Added request.json fields to unit test Customer_Location
and enabled testing of Customer_Location in
CreateVcpeResCustServiceTest.groovy

3. Cleanup of CreateVcpeRestCustService.groovy to match
code conventions

Issue-ID: SO-402
Change-Id: Id23161c1d63e2f0e7871bf9310468c1b64cbd04e
Signed-off-by: Marcus G K Williams <marcus.williams@intel.com>