Changing status of order should not require anything more than the Merchant UUID

The requirement of the deployment id in the request body was due to a misunderstanding about the /by/status endpoint convention. This misunderstanding was caught in a sprint demo and created ticket AML-3892.

Originally in implementing the PUT deployments /by/status endpoint some identifier was required and the Deployment ID was put into the body to serve that purpose. When AML-3892 was done, the merchant UUID was now the only identifier needed. The requirement for a Deployment ID should have been removed altogether and the endpoint should not require any given content type as there is no longer content in the request.