Auth: Remove can_view_configuration entitlement.

[markylaing]

Additionally, reduce log verbosity on GET requests when the entitlement is can_edit. These are additional checks that are used for conditionally populating configuration only for callers that can edit it.

Closes #13104 (different approach taken after discussion with @tomponline)

[tomponline]

Do we have tests to check for config being removed if user doesnt have can_edit on server config (and/or pool/network config)?

[markylaing]

Do we have tests to check for config being removed if user doesnt have can_edit on server config (and/or pool/network config)?

Yes:

• lxd/test/suites/auth.sh

  Line 214 in ff82bea

  ! lxc_remote info oidc: | grep -Fq 'core.https_address' || false

• lxd/test/suites/auth.sh

  Line 223 in ff82bea

  ! lxc_remote storage show oidc:test-pool | grep -Fq 'source:' || false

edit: I can't see one for networks actually. I can add