Added support in openstack connector for additional disks, either empty or based on an image. Warning! Tested only for v2 Openstack API. Changes for v3 were not implemented

Change-Id: Ice2b39d05620ca3eb90704c07d0c5919e4474793
Signed-off-by: montesmoreno <pablo.montesmoreno@telefonica.com>
diff --git a/openmanod.py b/openmanod.py
index bbbd7d3..b50ca9d 100755
--- a/openmanod.py
+++ b/openmanod.py
@@ -33,9 +33,9 @@
 '''
 __author__="Alfonso Tierno, Gerardo Garcia, Pablo Montes"
 __date__ ="$26-aug-2014 11:09:29$"
-__version__="0.5.2-r510"
-version_date="Oct 2016"
-database_version="0.16"      #expected database schema version
+__version__="0.5.3-r511"
+version_date="Dec 2016"
+database_version="0.17"      #expected database schema version
 
 import httpserver
 import time