Changing FQDN KEP status to implemented

Author: javidiaz

keps/sig-node/1797-configure-fqdn-as-hostname-for-pods/kep.yaml

@@ -8,7 +8,7 @@ owning-sig: sig-node
 participating-sigs:
   - sig-network
   - sig-node
-status: implementable
+status: implemented
 creation-date: 2020-05-18
 reviewers:
   - "@thockin"