add comments to munin plugins about needing db access, stop overriding defaults file

files/munin/sympa_lists

 #!/bin/sh
 # 
 # Plugin to monitor number of sympa lists
+# NOTE: assumes user running has read access to the database, like by the
+#  munin user having a ~/.my.cnf that allows read-only access
 # 
 #%# family=contrib
 #%# capabilities=autoconf
@@ -22,5 +24,5 @@ EOF
 esac
 
 cat <<EOF
-lists.value `mysql --defaults-file=/etc/mysql/debian.cnf -s --batch --database=sympa --execute "select count(name_list) from list_table where status_list = 'open'"`
+lists.value `mysql -s --batch --database=sympa --execute "select count(name_list) from list_table where status_list = 'open'"`
 EOF

files/munin/sympa_queue

 #!/bin/sh
 # 
 # Plugin to monitor sympa spools
+# NOTE: assumes user running has read access to the database, like by the
+#  munin user having a ~/.my.cnf that allows read-only access
 # 
 #%# family=contrib
 #%# capabilities=autoconf
@@ -65,7 +67,7 @@ cd $SPOOLDIR >/dev/null 2>/dev/null || {
      exit 1
 }
 
-mysql="mysql --defaults-file=/etc/mysql/debian.cnf -s --batch --database=sympa --execute"
+mysql="mysql -s --batch --database=sympa --execute"
 bulkspool_count=`$mysql "select count(*) from bulkspool_table"`
 bulkspool_legit=`$mysql "select count(*) from bulkspool_table left join bulkmailer_table on bulkmailer_table.messagekey_bulkmailer=bulkspool_table.messagekey_bulkspool where bulkmailer_table.messagekey_bulkmailer IS NULL;"`
 let "bulkspool_remaining = bulkspool_count - bulkspool_legit"

files/munin/sympa_subscribers

 #!/bin/sh
 # 
 # Plugin to monitor number of sympa subscribers
+# NOTE: assumes user running has read access to the database, like by the
+#  munin user having a ~/.my.cnf that allows read-only access
 # 
 #%# family=contrib
 #%# capabilities=autoconf
@@ -22,5 +24,5 @@ EOF
 esac
 
 cat <<EOF
-subscribers.value `mysql --defaults-file=/etc/mysql/debian.cnf -s --batch --database=sympa --execute "select count(user_subscriber) from subscriber_table"`
+subscribers.value `mysql -s --batch --database=sympa --execute "select count(user_subscriber) from subscriber_table"`
 EOF

files/munin/sympa_users

 #!/bin/sh
 # 
 # Plugin to monitor number of sympa users
+# NOTE: assumes user running has read access to the database, like by the
+#  munin user having a ~/.my.cnf that allows read-only access
 # 
 #%# family=contrib
 #%# capabilities=autoconf
@@ -22,5 +24,5 @@ EOF
 esac
 
 cat <<EOF
-users.value `mysql --defaults-file=/etc/mysql/debian.cnf -s --batch --database=sympa --execute "select count(email_user) from user_table"`
+users.value `mysql -s --batch --database=sympa --execute "select count(email_user) from user_table"`
 EOF