Avoid killing Atomix management processes when shutting down Atomix nodes

Change-Id: If89bb6f060e8349e75995aed079ac7f65ffe8752
diff --git a/tools/test/bin/atomix-service b/tools/test/bin/atomix-service
index 1da285b..7b60d93 100755
--- a/tools/test/bin/atomix-service
+++ b/tools/test/bin/atomix-service
@@ -50,7 +50,7 @@
         # Execute the remote commands
         for node in $nodes; do
             ssh -tt $ONOS_USER@${node} "
-                pid=\$(ps -ef | grep atomix | grep -v grep | cut -c10-15 | tr -d ' ')
+                pid=\$(ps -ef | grep AtomixAgent | grep -v grep | cut -c10-15 | tr -d ' ')
                 if [ -n \"\$pid\" ]; then
                     echo \"Killing Atomix process \$pid on \$(hostname)...\"
                     kill -9 \$pid