Only configure statistics-channels if supported

(cherry picked from commit d0c8c6d7ef)

bin/tests/system/synthfromdnssec/setup.sh

@@ -16,12 +16,16 @@
 
 set -e
 
-copy_setports ns1/named.conf.in ns1/named.conf
-copy_setports ns2/named.conf.in ns2/named.conf
-copy_setports ns3/named.conf.in ns3/named.conf
-copy_setports ns4/named.conf.in ns4/named.conf
-copy_setports ns5/named.conf.in ns5/named.conf
-copy_setports ns6/named.conf.in ns6/named.conf
+for d in ns1 ns2 ns3 ns4 ns5 ns6; do
+  conf=named.conf
+  copy_setports "${d}/${conf}.in" "${d}/${conf}"
+  conf=statistics-channels.conf
+  if $FEATURETEST --have-libxml2 || $FEATURETEST --have-json-c; then
+    copy_setports "${d}/${conf}.in" "${d}/${conf}"
+  else
+    echo "" >"${d}/${conf}"
+  fi
+done
 
 (
   cd ns1