Merge branch '6638-count-changes' into 'master'

remove unwanted PERDATA output

See merge request !159

check_clientbackup

@@ -103,7 +103,7 @@ do
 done
 
 echo "--- transfer:"
-echo "$result" | grep "__[A-Z][A-Z]*__ "
+echo "$result" | grep "__[A-Z][A-Z]*__ " | grep -v "__PERFDATA__"
 echo
 echo "$result" | grep "__COUNTERS__"
 echo