Run check connection before running a sync or discover

[sherifnada]

Tell us about the problem you're trying to solve

The saved credentials we use to connect to a given connector could expire, lose their permissions, or get invalidated out of band.

Describe the solution you’d like

I would like to run an explicit check operation before every sync to verify this is not the case.

┆Issue is synchronized with this Asana task by Unito

[evantahler]

Duplicate of #12281