update Dockerfile to onap

Change-Id: I9c5229cdc79a7dfc5f74d919c58aa579084fef55
Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>
diff --git a/policy-base/Dockerfile b/policy-base/Dockerfile
index 53ae4c1..e6c4b1f 100644
--- a/policy-base/Dockerfile
+++ b/policy-base/Dockerfile
@@ -1,4 +1,4 @@
-FROM openecomp/policy/policy-os
+FROM onap/policy/policy-os
 
 
 # install MariaDB client