mention --test in bug report guidelines

debian/monkeysign.bug-script

@@ -8,10 +8,14 @@ monkeyscan --version --debug 2>&3 || monkeysign --version --debug 2>&3
 
 cat >&3 <<EOF
 
-please also include a backtrace and full --debug information
+please also include a backtrace and full --debug information in case
+of a crash or any failure.
 
 WARNING: make sure you review the information included in the output for
 confidential information. secret key material should never show up in
 Monkeysign output, but public key material, including user identies like
 pictures and email addresses may be shown.
+
+also include the output of monkeysign --test if you run Monkeysign
+older than 2.1.
 EOF