Adapt script to LAVA's updated job results format

The script has been updated to align with changes introduced
in LAVA:
https://gitlab.com/lava/lava/-/commit/a1d4dae99c2705966925788242684cde3c4f8aea
Specifically, the `lava-test-monitor` phase no longer includes
results data, requiring modifications to how test results are
parsed.

Signed-off-by: Leandro Belli <leandro.belli@arm.com>
Change-Id: I8bad6123c7824a7a6ec8b343d8e5a04fa0552975
1 file changed