Fix stc dependencies on external scenarios

 - also only install test application once in dist-test-seq

Change-Id: I4a002cd900e8133ad2163fb6b946e082174fcf85
diff --git a/tools/test/scenarios/dist-test.xml b/tools/test/scenarios/dist-test.xml
index 6788d62..7386a93 100644
--- a/tools/test/scenarios/dist-test.xml
+++ b/tools/test/scenarios/dist-test.xml
@@ -19,7 +19,7 @@
     <group name="Distributed-Primitives">
 
         <import file="${ONOS_SCENARIOS}/dist-setup.xml"/>
-        <dependency name="Distributed-Primitives-Setup" requires="Setup"/>
+        <dependency name="Distributed-Primitives-Setup"/>
 
         <group name="Distributed-Primitives-Internal" requires="Distributed-Primitives-Setup">