Fix synchronizer hanging

Change-Id: Idbe822f9a37afe8e657368f9d3086a03e312888b
diff --git a/xos/synchronizer/steps/roles/setup-sprint-hss/tasks/main.yml b/xos/synchronizer/steps/roles/setup-sprint-hss/tasks/main.yml
index 2bd8a1f..306cfd1 100644
--- a/xos/synchronizer/steps/roles/setup-sprint-hss/tasks/main.yml
+++ b/xos/synchronizer/steps/roles/setup-sprint-hss/tasks/main.yml
@@ -32,7 +32,11 @@
   args:
     chdir: "{{ source_path }}"
 
+- name: Kill running HSS
+  shell: "killall -w hss"
+  ignore_errors: yes
+
 - name: Run HSS
-  shell: "bin/hss -j conf/hss.json"
+  shell: "nohup bin/hss -j conf/hss.json > /tmp/hss.output &"
   args:
     chdir: "{{ source_path }}"