Update etcd default ports for v3, and validate tests

cluster/saltbase/salt/etcd/init.sls

@@ -63,7 +63,7 @@ touch /var/log/etcd-events.log:
     - dir_mode: 755
     - context:
         suffix: ""
-        port: 4001
+        port: 2379
         server_port: 2380
         cpulimit: '"200m"'
 

cluster/saltbase/salt/kube-apiserver/kube-apiserver.manifest

@@ -58,7 +58,7 @@
 {% if pillar['storage_backend'] is defined -%}
   {% set storage_backend = "--storage-backend=" + pillar['storage_backend'] -%}
 {% endif -%}
-{% set etcd_servers = "--etcd-servers=http://127.0.0.1:4001" -%}
+{% set etcd_servers = "--etcd-servers=http://127.0.0.1:2379" -%}
 {% set etcd_servers_overrides = "--etcd-servers-overrides=/events#http://127.0.0.1:4002" -%}
 
 {% set target_ram_mb = "" -%}