[2.3] Strange error when registering external rack controller

[Andres Rodriguez]

After I added a new rack controller that happened to be an older version, started seeing stranger errors.

Region - 2.3 (from experimental3)
Rack - 2.1.5 (from archive)

Errors:

2017-07-13 01:09:39 regiond: [info] 10.90.90.13 POST /MAAS/metadata/status/spn6m8/latest HTTP/1.1 --> 400 BAD_REQUEST (referrer: -; agent: Python-urllib/3.5)
2017-07-13 01:09:43 metadataserver: [error] Status payload is not valid JSON:
--sNafcEKTyPKNZRkdYptQGkZPTdxKRox
Content-Disposition: form-data; name="op"

signal
--sNafcEKTyPKNZRkdYptQGkZPTdxKRox
Content-Disposition: form-data; name="error"

Starting 00-maas-01-lshw [1/5]
--sNafcEKTyPKNZRkdYptQGkZPTdxKRox
Content-Disposition: form-data; name="status"

WORKING
--sNafcEKTyPKNZRkdYptQGkZPTdxKRox--

2017-07-13 01:09:43 regiond: [info] 10.90.90.13 POST /MAAS/metadata/status/spn6m8/latest HTTP/1.1 --> 400 BAD_REQUEST (referrer: -; agent: Python-urllib/3.5)
2017-07-13 01:09:51 metadataserver: [error] Status payload is not valid JSON:
--sNafcEKTyPKNZRkdYptQGkZPTdxKRox
Content-Disposition: form-data; name="op"

signal
--sNafcEKTyPKNZRkdYptQGkZPTdxKRox
Content-Disposition: form-data; name="error"

Starting 00-maas-01-lshw [1/5]
--sNafcEKTyPKNZRkdYptQGkZPTdxKRox
Content-Disposition: form-data; name="status"

WORKING
--sNafcEKTyPKNZRkdYptQGkZPTdxKRox--

2017-07-13 01:09:51 regiond: [info] 10.90.90.13 POST /MAAS/metadata/status/spn6m8/latest HTTP/1.1 --> 400 BAD_REQUEST (referrer: -; agent: Python-urllib/3.5)

[....]

         <configuration>
          <setting id="created" value="2017-07-13 00:33:22" />
          <setting id="filesystem" value="ext4" />
          <setting id="label" value="root" />
          <setting id="lastmountpoint" value="/" />
          <setting id="modified" value="2017-07-13 00:34:55" />
          <setting id="mount.fstype" value="ext4" />
          <setting id="mount.options" value="rw,relatime,data=ordered" />
          <setting id="mounted" value="2017-07-13 00:35:20" />
          <setting id="state" value="mounted" />
         </configuration>
         <capabilities>
          <capability id="journaled" />
          <capability id="extended_attributes" >Extended Attributes</capability>
          <capability id="large_files" >4GB+ files</capability>
          <capability id="huge_files" >16TB+ files</capability>
          <capability id="dir_nlink" >directories with 65000+ subdirs</capability>
          <capability id="recover" >needs recovery</capability>
          <capability id="extents" >extent-based allocation</capability>
          <capability id="ext4" />
          <capability id="ext2" >EXT2/EXT3</capability>
          <capability id="initialized" >initialized volume</capability>
         </capabilities>
        </node>
      </node>
    </node>
  </node>
</node>
</list>

--QubcZajxjwFZLMotbpEyyQnprrMjOzg
Content-Disposition: form-data; name="00-maas-01-lshw.err"; filename="00-maas-01-lshw.err"
Content-Type: application/octet-stream

--QubcZajxjwFZLMotbpEyyQnprrMjOzg--