Fix args in metrics collector

[misohu]

Closes: #49

Pass arguments to the metrics collector.

Test locally:

cd file-metrics-collector
rockcraft clean && rockcraft pack --verbosity=trace --debug 
sudo rockcraft.skopeo --insecure-policy copy oci-archive:file-metrics-collector_v0.17.0_amd64.rock docker-daemon:misohu/file-metrics-collector:0.17.0
docker run -ti  misohu/file-metrics-collector:0.17.0 -v

Expected output:

2024-09-03T13:33:43.524Z [pebble] Started daemon.
2024-09-03T13:33:43.555Z [pebble] POST /v1/services 15.744369ms 202
2024-09-03T13:33:43.570Z [pebble] Service "file-metrics-collector" starting: /app/file-metricscollector [ -v ]
2024-09-03T13:33:43.589Z [pebble] Change 1 task (Start service "file-metrics-collector") failed: cannot start service: exited quickly with code 2
2024-09-03T13:33:43.622Z [pebble] GET /v1/changes/1/wait 66.977009ms 200
2024-09-03T13:33:43.622Z [pebble] Started default

As we can see the -v is passed to the service.

I have also tested this rock locally with katib-bundle integration tests.

[NohaIhab]

thx @misohu LGTM, I tested with bundle integration tests from track/0.17 and they passed