ci/lava: Only parse result within testcase section

This commit fixes an issue related to leftover between jobs in the same
device under test in LAVA.

There is a possibility of having the resulting output being dumped just
after the boot, such as this job:
https://gitlab.freedesktop.org/mesa/mesa/-/jobs/25674303#L155

Signed-off-by: Guilherme Gallo <guilherme.gallo@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17752>

.gitlab-ci/lava/lava_job_submitter.py

@@ -390,7 +390,14 @@ def fetch_logs(job, max_idle_time, log_follower) -> None:
         job.heartbeat()
     parsed_lines = log_follower.flush()
 
-    parsed_lines = job.parse_job_result_from_log(parsed_lines)
+    # Only parse job results when the script reaches the end of the logs.
+    # Depending on how much payload the RPC scheduler.jobs.logs get, it may
+    # reach the LAVA_POST_PROCESSING phase.
+    if log_follower.current_section.type in (
+        LogSectionType.TEST_CASE,
+        LogSectionType.LAVA_POST_PROCESSING,
+    ):
+        parsed_lines = job.parse_job_result_from_log(parsed_lines)
 
     for line in parsed_lines:
         print_log(line)