VOL-1422:  Update docs and docker compose files

- remove deprecated cli
- use updated etcd matching k8s deployment
- remove references to python openolt adapter

Change-Id: I273490233652b03163b77f990a96f4b8847579cb
diff --git a/compose/system-test-ponsim.yml b/compose/system-test-ponsim.yml
old mode 100755
new mode 100644
index f26d27f..af23668
--- a/compose/system-test-ponsim.yml
+++ b/compose/system-test-ponsim.yml
@@ -48,7 +48,7 @@
 
 
   etcd:
-    image: "quay.io/coreos/etcd:v3.2.9"
+    image: "quay.io/coreos/etcd:v3.4.1"
     command: [
       "etcd",
       "--name=etcd0",
@@ -95,24 +95,6 @@
     restart: unless-stopped
 
 
-  cli:
-    image: "${REGISTRY}${REPOSITORY}voltha-cli:latest"
-    logging:
-      driver: "json-file"
-      options:
-        max-size: "10m"
-        max-file: "3"
-    environment:
-      DOCKER_HOST_IP: "${DOCKER_HOST_IP}"
-    entrypoint:
-    - /voltha/python/cli/setup.sh
-    - -g ${DOCKER_HOST_IP}:50057
-    networks:
-    - default
-    ports:
-    - "5022:22"
-
-
   ofagent:
     image: "${REGISTRY}${REPOSITORY}voltha-ofagent:latest"
     logging: