The endpoints controller store the resource version of the previous
Endpoints objects to avoid issues related to stale information on the
cache.
However, there can be update operations that succeed without increasing
the resource version, causing the endpoints controller to declare stale
the existing Resource Version and stopping the Endpoints to be updated.
Co-Author-By: Quan Tian <quan.tian@broadcom.com>
Co-Author-By: Yang Yang <yyyng@amazon.com>