Updating Etch Version to 1.3

Removing all incubator suffixes

Change-Id: Ie1c7c93b3481530182d74cb5af20b051048c7c7c

git-svn-id: https://svn.apache.org/repos/asf/etch/trunk@1518518 13f79535-47bb-0310-9956-ffa450edef68