Add deposit metadata update step in deposit icinga check
This extends the current icinga checks on deposit to trigger a metadata update when the main deposit is done. It retrieves the swhid from the deposit status calls. Then triggers a metadata update on the deposit using the latest deposit client abilities (0.3).
Related to swh-deposit#2685 (closed)
Depends on D4270
Test Plan
tox
Migrated from D4252 (view on Phabricator)