Modifying uitab archetype to allow it to co-exist/overlay the ui archetype.

Change-Id: I5fd8408aaaf461e29e757389d4acbd94647cd1c5
diff --git a/tools/dev/bin/onos-create-app b/tools/dev/bin/onos-create-app
index 65b00b6..cbae101 100755
--- a/tools/dev/bin/onos-create-app
+++ b/tools/dev/bin/onos-create-app
@@ -11,7 +11,7 @@
 [ $type = app ] && archetype=bundle || archetype=$type
 
 if [ "$1" = "-?" -o "$1" = "-h" -o "$1" = "--help" ]; then
-    echo "usage: $(basename $0) {app|bundle|ui|cli|api} groupId artifactId version package mvn-options"
+    echo "usage: $(basename $0) {app|bundle|ui|uitab|cli|api} groupId artifactId version package mvn-options"
     echo "        All arguments are optional"
     exit 1
 fi