Retrieve corrupted agent configuration(s) which can't be decrypted due to missing certificate

Retrieve a list of the corrupted agent configurations.

'readExternalAgents', 'manageExternalAgents' are permitted to view all configurations whereas 'runExternalAgent' is only permitted to view a single configuration associated with the access token.

Entitlements:
- manageExternalAgents (Manage external Agent configurations)
- readExternalAgents (Read external Agent configurations)