Make reloading to be triggerable from outside

[akijakya]

It would be nice to be able to not only run the reloader worker when it is scheduled by configuration, but on other events as well, like after secret-sync synced some new secrets into the local Vault, or by an ops team member manually after they changed a secret etc.

[ramizpolic]

We could use CRs to trigger a refresh request and update the CR with details about reloading. The CR could have 4 potential states Created/Empty, InProgress, Succeeded, Failed. However, I would wait out for more feature requests before working on this as in our current use-cases we only need to have reloading capabilities present (rather than enforcing/checking refreshes)