Added doc support to FlavorManage API ext.

Modified: api-ref/src/wadls/compute-api/src/api_samples/os-flavor-manage/flavor-create-post-req.json
          api-ref/src/wadls/compute-api/src/ext/os-flavormanage.wadl
Deleted:  api-ref/src/wadls/compute-api/src/ext/samples/os-flavormanage-request.json
          api-ref/src/wadls/compute-api/src/ext/samples/os-flavormanage-response.json
Fixes: bug 1088528 (along with previous commit for docs in nova repo)

Change-Id: Ib1be62b78178e98eda4202fb456bf5aed0701f27
Merge "Added doc support to FlavorManage API ext."