MT#9709 fix b196b6b04f Using wrong var.

This was producing empty values at ngcp-ossbss template mysql_values.cfg file
on a cluster_set of central type

Change-Id: I68160a9c5bef078d3154c6e8da6db1e9bcbb07aa

lib/get_all_cluster_set_ip_maps

@@ -15,7 +15,7 @@
   out = [];
 
   IF cluster_sets.type == 'central';
-    set_hosts = [ hosts.$host, hosts.$host.peer ];
+    set_hosts = [ hosts.${argv.host}, hosts.${argv.host}.peer ];
   ELSE;
     set_hosts = hosts.keys;
   END;

lib/get_all_cluster_set_shared_ip_maps

@@ -15,7 +15,7 @@
   out = [];
 
   IF cluster_sets.type == 'central';
-    set_hosts = [ hosts.$host, hosts.$host.peer ];
+    set_hosts = [ hosts.${argv.host}, hosts.${argv.host}.peer ];
   ELSE;
     set_hosts = hosts.keys;
   END;