core: set action msg for ForceRemoveStorageDomain

Set action message type (var action) in setActionMessageParameters
instead of setting it in canDoAction.
When setting it in canDoAction, it's initialized only after
the locks are checked, hence error message due to a lock
displays $action and not the real value  because it's initialized too late.

Change-Id: Ib5f2e1b4e525693be8cd8ce06b17be14e2f8a57c
Signed-off-by: Alissa Bonas <abonas@redhat.com>
core: improve CDA of AddStorageServerConnection

Improve canDoAction of AddStorageServerConnectionCommand
to have early returns in failures, and call to its super.canDoAction
since there are checks that are done there and
are not done by the overriding command.

Change-Id: I00a46aac7d642128c287ef633c492f3c1b85f572
Signed-off-by: Alissa Bonas <abonas@redhat.com>