Check the result of atomix-install script

Change-Id: I159cafd682d5ef29da9ebe8a8050562169f59175
diff --git a/TestON/tests/dependencies/ONOSSetup.py b/TestON/tests/dependencies/ONOSSetup.py
index 547222b..a601569 100644
--- a/TestON/tests/dependencies/ONOSSetup.py
+++ b/TestON/tests/dependencies/ONOSSetup.py
@@ -325,7 +325,7 @@
         main.step( "Installing Atomix" )
         atomixInstallResult = main.TRUE
 
-        cluster.installAtomix( parallel )
+        atomixInstallResult = cluster.installAtomix( parallel )
         utilities.assert_equals( expect=main.TRUE,
                                  actual=atomixInstallResult,
                                  onpass="Successfully installed Atomix",