Treat infrastructure errors as UNKNOWN status in LAVA v2 callback
Treat infrastructure errors as UNKNOWN status in LAVA v2 callback

The LAVA v2 callback meta-data provides an error_type field when the
job failed.  If this is set to Infrastructure then set the boot status
to UNKNOWN instead of FAIL as it is not a kernel failure.

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

kernelci/kernelci-backend,kernelci/kernelci-backend