Add version primitive at http server and client

Change-Id: I02a93f6f43700dbc95f8d42a27dd905eb5483f19
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>
diff --git a/osm_ro/httpserver.py b/osm_ro/httpserver.py
index 4841a98..d6dc0c7 100644
--- a/osm_ro/httpserver.py
+++ b/osm_ro/httpserver.py
@@ -305,6 +305,9 @@
     '''Don't know yet if really needed. Keep it just in case'''
     bottle.response.headers['Access-Control-Allow-Origin'] = '*'
 
+@bottle.route(url_base + '/version', method='GET')
+def http_get_version():
+    return nfvo.get_version()
 #
 # VNFs
 #