Automatic merge from submit-queue
Add support for the standard objectmeta field selectors
certificates API was missing standard field selectors (noticed in 4120179db5 (r75413160))
also silences client-side warnings when using field selectors that don't have a registered client-side transformation (no functional change, since we were already returning the original field/value). if we want to trend toward embedding less conversion logic in our clients, I don't see us fully duplicating field selector conversions client-side to make that warning disappear.
c7a82463e7