restapi: #853739 - Actions Should Return Entities In Body

On actions api returns parameters in response body instead
of actual action result.

https://bugzilla.redhat.com/853739

Change-Id: Ic636b7205fa7b6fbb5d98efdbcd7976e9beb2187
Signed-off-by: Ori Liel <oliel@redhat.com>
Signed-off-by: Ravi Nori <rnori@redhat.com>