[feat] Add 'leap debug' cmd

This will output node debug information by calling the
bin/debug.sh script.

bin/debug.sh

+#!/bin/bash
+# debug script to be run on remote servers
+# called from leap_cli with the 'leap debug' cmd
+
+regexp='(leap|pixelated|stunnel|couch|soledad|haproxy)'
+
+# query facts and filter out private stuff
+echo -e '\n\n'
+facter | egrep -iv '(^ssh|^uniqueid)'
+
+# query installed versions
+echo -e '\n\n'
+dpkg -l | egrep "$regexp"
+
+
+# query running procs
+echo -e '\n\n'
+ps aux|egrep "$regexp"
+
+echo -e '\n\n'
+echo -e "Last deploy:\n"
+tail -2 /var/log/leap/deploy-summary.log
+
+
+

lib/leap_cli/commands/debug.rb

+module LeapCli; module Commands
+
+  desc 'Output debug information.'
+  long_desc 'The FILTER can be the name of a node, service, or tag.'
+  arg_name 'FILTER'
+  command [:debug, :d] do |c|
+    c.action do |global,options,args|
+      nodes = manager.filter!(args)
+      ssh_connect(nodes, connect_options(options)) do |ssh|
+        ssh.leap.debug
+      end
+    end
+  end
+
+end; end