Return complete response from compute baremetal client

Currently compute baremetal_nodes_client returns Response by removing
top key from Response.
For example-
return service_client.ResponseBody(resp, body['node'])

As service clients are in direction to move to Tempest-lib, all
service clients should return Response without any truncation.
One good example is Resource pagination links which are lost with current
way of return value. Resource pagination links are present in parallel
(not inside) to top key of Response.

This patch makes compute baremetal_nodes_client to return complete
Response body.

Change-Id: I93a0e82063900ffd1893e63a992f9f827c5b5ae2
Implements: blueprint method-return-value-and-move-service-clients-to-lib
2 files changed