Andreas Auernhammer eac518b178 admin API: change returned HTTP error in hardware info (#8471)
This commit replaces the returned error message by
the hardware info handler from `Method-Not-Allowed`
to `Bad-Request` since the current HTTP error is not
correct according to the HTTP spec.

In particular:
```
The origin server MUST generate an Allow header field
in a 405 response containing a list of the target
resource's currently supported methods.
```
From: https://tools.ietf.org/html/rfc7231#section-6.5.5
2019-10-30 23:41:18 -07:00
..
2019-09-10 04:42:29 +05:30