fix(agent): PENG-2457 modify the time param used for querying InfluxDB

This commit modifies the query made against InfluxDB when fetching for
job metrics in a way that the *time* argument is given in nanoseconds.
This is necessary because the agent sends the time in seconds, so, when
fetching the *max_times*, the API will send the time in seconds as well.

However, the data stored in InfluxDB uses the epoch in nanoseconds, which
requires the conversion before executing the query, otherwise all data in
the database will be returned.

jobbergate-agent/jobbergate_agent/jobbergate/update.py

@@ -173,7 +173,7 @@ async def update_job_metrics(active_job_submittion: ActiveJobSubmission) -> None
                 fetch_influx_data(
                     active_job_submittion.slurm_job_id,
                     measurement["name"],
-                    time=job_max_time.max_time,
+                    time=int(job_max_time.max_time * 1e9),  # convert to ns since the agent sends in seconds
                     host=job_max_time.node_host,
                     step=job_max_time.step,
                     task=job_max_time.task,

jobbergate-agent/tests/jobbergate/test_update.py

@@ -676,7 +676,7 @@ async def test_update_job_metrics__error_sending_metrics_to_api(
             mock.call(
                 slurm_job_id,
                 measurement["name"],
-                time=job_max_time["max_time"],
+                time=int(job_max_time["max_time"] * 1e9),
                 host=job_max_time["node_host"],
                 step=job_max_time["step"],
                 task=job_max_time["task"],
@@ -768,7 +768,7 @@ async def test_update_job_metrics__success(
             mock.call(
                 slurm_job_id,
                 measurement["name"],
-                time=job_max_time["max_time"],
+                time=int(job_max_time["max_time"] * 1e9),
                 host=job_max_time["node_host"],
                 step=job_max_time["step"],
                 task=job_max_time["task"],