AS-68 delete server anyway if the LB is in PENDING_DELETE status (ready for review)

Retry would probably handle this case just fine, but (1) this will bail out earlier, without the need to retry, and (2) I have no idea how long a LB can remain in PENDING_DELETE.

That uncommented system test passed on my machine when running against SYD.

Have not run mimic tests yet... will do so.