don't check snapshot version of t3

Change-Id: Ib2e01d8ca671cc98227cd5713be731af8a2c6b05
diff --git a/tools/build/onos-validate-change-version.excludes b/tools/build/onos-validate-change-version.excludes
index f59bd57..88e0545 100755
--- a/tools/build/onos-validate-change-version.excludes
+++ b/tools/build/onos-validate-change-version.excludes
@@ -15,6 +15,7 @@
 \./apps/tenbi
 \./apps/vrouter/pom.xml
 \./apps/yms
+\./apps/t3
 \./buck-out/
 \./buck-tools/onos_stage.py
 \./bucklets/maven_jar\.bucklet