Use buck for tests

- use buck instead of maven
- cleanup output when building cluster.json file
- swap the correct nodes in swap nodes test

(cherry picked from commit 4b66b32e5057d84175195a9c5a823e59cb66fa67)

Change-Id: If5981567115fd3acdc353f4a2ee620f5e0a29716
diff --git a/TestON/tests/HA/HAscaling/HAscaling.py b/TestON/tests/HA/HAscaling/HAscaling.py
index b0bc126..4fd29f3 100644
--- a/TestON/tests/HA/HAscaling/HAscaling.py
+++ b/TestON/tests/HA/HAscaling/HAscaling.py
@@ -238,14 +238,20 @@
         main.log.warn( sed )
         main.log.warn( repr( sed ) )
         handle.sendline( sed )
+        handle.expect( metaFile )
+        output = handle.before
         handle.expect( "\$" )
-        main.log.debug( repr( handle.before ) )
+        output += handle.before
+        main.log.debug( repr( output ) )
 
         main.step( "Creating ONOS package" )
-        packageResult = main.ONOSbench.onosPackage()
+        packageResult = main.ONOSbench.buckBuild()
         utilities.assert_equals( expect=main.TRUE, actual=packageResult,
                                  onpass="ONOS package successful",
                                  onfail="ONOS package failed" )
+        if not packageResult:
+            main.cleanup()
+            main.exit()
 
         main.step( "Installing ONOS package" )
         onosInstallResult = main.TRUE