New update status api

Added a new workflow api with UTs and ITs.

Update Workflow API with rest end point : /workflow/{workflowId}/workflowRun/{runId}/updateStatus

Takes a Json Payload: { "status": "running" }

Finds the workflowRunDoc and Updates the status. In case status is final like finished and failed it also updates the endTimeStamp on the doc.

ITs for the api:

• One Success case when final state and one when non-final state.
• Bad request when the payload is incorrect.
• Not found request when WorkflowRun doesn't exist or Workflow doesn't exist.
• Unauthorized case with no access token and no data access token.
• Unauthorized when given invalid partition id.