MINOR: peers: Add a new command to the CLI for peers.

Implements "show peers [peers section]" new CLI command to dump information
about the peers and their stick-tables to be synchronized and others internal.

May be backported as far as 1.5.
diff --git a/include/types/applet.h b/include/types/applet.h
index 9fc9ec8..21c0e90 100644
--- a/include/types/applet.h
+++ b/include/types/applet.h
@@ -161,6 +161,11 @@
 			struct task *task;
 			struct hlua_function *fcn;
 		} hlua_cli;
+		struct {
+			void *target;
+			struct peers *peers; /* "peers" section being currently dumped. */
+			struct peer *peer;   /* "peer" being currently dumped. */
+		} cfgpeers;
 		/* NOTE: please add regular applet contexts (ie: not
 		 * CLI-specific ones) above, before "cli".
 		 */