v0.4.50 datacenter-netmap-import bug fixed running on US16.04. Added created_at value at datacenter_nets database table

Change-Id: I06b0b39e235f0100dddb1546a89626bed82f2920
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>
diff --git a/openmanod.py b/openmanod.py
index 57aa6bd..ccf2b0d 100755
--- a/openmanod.py
+++ b/openmanod.py
@@ -33,8 +33,8 @@
 '''
 __author__="Alfonso Tierno, Gerardo Garcia, Pablo Montes"
 __date__ ="$26-aug-2014 11:09:29$"
-__version__="0.4.49-r491"
-version_date="Aug 2016"
+__version__="0.4.50-r492"
+version_date="Sep 2016"
 database_version="0.13"      #expected database schema version
 
 import httpserver