Merge pull request #952 from Neraud/debsecan

Improve documentation of debsecan_ plugin and add example graphs

plugins/debian/debsecan_

@@ -24,9 +24,9 @@ The default configuration is as follows.
 
     [debsecan]
     env.suite jessie
-    env.fixed_warn 1
+    env.fixed_warning 1
     env.fixed_critical 1000
-    env.remote_warn 1
+    env.remote_warning 1
     env.remote_critical 10
 
 The name of the group needs to match the name of the symlink to be applied.