Closes-Bug: 1789979
fm-rest-api returns json format message for the correct api
access. For the invalid api access, the message is with html
format, need add wrap_app to convert it to json format.
Fix:
The implementation code is copied from upstream Ironic API,
and minor modification to pass tox pep8 check.
Also remove "x" attribute for the py file.
Test:
Pass build and multi node deploy test. Confirmed the return
message is json format.
Change-Id: I36fa89b82377d52008a467316c42c06caa65cd90
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>