VOL-1874 - update image versions to released

also:
- removed the optional python version of olt adapter
- changed the name on ofagent pod to voltha-ofagent to
  be like other pods

Change-Id: Ied8487adecd19dddf01abf85adc595d4e5200733
diff --git a/voltha/requirements.yaml b/voltha/requirements.yaml
index 20832fd..f671d8a 100644
--- a/voltha/requirements.yaml
+++ b/voltha/requirements.yaml
@@ -20,5 +20,5 @@
     condition: private_kafka_cluster
   - name: voltha-etcd-cluster
     repository: file://../voltha-etcd-cluster
-    version: 2.0.2
+    version: 2.1.0
     condition: private_etcd_cluster