Add test for REST Service Provider GET and POST
    
    Provision two Service Providers then test:
    
    - We can fetch a blank list of SPs
    - Add an SP via the admin interface
    - We get list of all SPs and that is it
    - Add an SP via POST
    - We get list of all SPs and now there are two
    - We get a specific SP and confirm we got the right one.
    
    https://fedorahosted.org/ipsilon/ticket/26
    
    Signed-off-by: Rob Crittenden <rcritten@redhat.com>
    Reviewed-by: Simo Sorce <simo@redhat.com>