CORD-842 add proxy for XOS Chameleon

Change-Id: I7ef742ec7cb3c4f8b354d254eb9256214cba0476
diff --git a/roles/head-prologue/files/cord-http.conf b/roles/head-prologue/files/cord-http.conf
index 0fca272..f83c8d9 100644
--- a/roles/head-prologue/files/cord-http.conf
+++ b/roles/head-prologue/files/cord-http.conf
@@ -49,6 +49,8 @@
     ProxyPass /static/ http://xos:9000/static/
     ProxyPass /loggedin/ http://xos:9000/loggedin/
     ProxyPass /serviceGrid/ http://xos:9000/serviceGrid/
+
+    ProxyPass /xosapi/ http://xos-chameleon:9101/xosapi/
 </IfModule>
 
 <IfModule rewrite_module>