Fix quotes

Change-Id: I504fe8705ba8868346e963f47a6f40085cbf9ff8
diff --git a/xos/synchronizer/steps/sync_host.yaml b/xos/synchronizer/steps/sync_host.yaml
index a98fc02..0484675 100644
--- a/xos/synchronizer/steps/sync_host.yaml
+++ b/xos/synchronizer/steps/sync_host.yaml
@@ -9,5 +9,5 @@
       method: POST
       user: onos
       password: rocks
-      body: "{{ rest_body }}"
+      body: '{{ rest_body }}'
       body_format: json
\ No newline at end of file