Add suggest capability to debsecan plugin

plugins/debian/debsecan_

@@ -36,6 +36,7 @@ Shell globbing patterns are allowed.
 
 * Nicolas BOUTHORS <nbouthors@nbi.fr> http://nbi.fr/, Inspiration of the moment 10/10/2007
 * Olivier Mehani <shtrom+munin@ssji.net>, 2016
+* Wilco de Boer <deboer.wilco@gmail.com>, 2021
 
 =head1 LICENSE
 
@@ -43,13 +44,13 @@ Public Domain
 
 =head1 MAGIC MARKERS
 
-%# family=auto
-%# capabilities=autoconf
+#%# family=auto
+#%# capabilities=autoconf suggest
 
 =cut
 
 # Auto enable if we have debsecan only
-if [ "$1" = "autoconf" ] ; then
+if [ "$1" = "autoconf" ]; then
   if [ -x /usr/bin/debsecan ]; then
     echo yes
   else
@@ -58,6 +59,13 @@ if [ "$1" = "autoconf" ] ; then
   exit 0
 fi
 
+# Suggest both modes when asked
+if [ "$1" = "suggest" ]; then
+  echo 'pkg'
+  echo 'cve'
+  exit 0
+fi
+
 # Fail if we don't have debsecan
 if [ ! -x /usr/bin/debsecan ]; then
   echo 'error: /usr/bin/debsecan not found' >&2