TT#115501 ngcp-sync-grants: Fix typo for copy operation

Even though this has no current functional difference, as we always have
a hosts definition, we should key the copy action on the copy hash in
the grants.yml file.

Change-Id: I45b6d4100910e600979b187a769a92753a8e7a2f

sbin/ngcp-sync-grants

@@ -488,7 +488,7 @@ sub main {
                 /^hosts$/ && do {
                     $rc += apply_host_grants();
                 };
-                /^hosts$/ && do {
+                /^copy$/ && do {
                     $rc += apply_copy_grants();
                 };
             } # SWITCH