A recent commit changed name validation from DNS Subdomain to DNS Label.
The assumption was that a subdomain-named SS could never work and the
only reasonable thing to do would be to delete it. But if there is a
finalizer, the delete is not possible because we would reject the update
because the old name (subdomain) did not pass the new validation.
This commit does not re-validate the ObjectMeta on update. Probably
every resource should follow this pattern, but mostly it's a non-issue
becauase the above change (name validation) is not something we do -
this case was excpetional.
c5c58eb653