Handle boot data in test suite callback
Handle boot data in test suite callback

* expand the key map with JSON keys to include all the newly added
  fields in the test suite documents when parsing test callback data

* parse the LAVA meta-data when handling tests callback data in the
  same way as for boots

* do not overwrite any existing boot logs in the boot callback handler
  as the same ones will always be generated by the test handler

Signed-off-by: Guillaume Tucker <e7e20b7c30f19d4ca6b81319ef81bf200369d137@collabora.com>

kernelci/kernelci-backend,kernelci/kernelci-backend