Add support for passing channels as list

The list of channels for statusbot can get large and unweildy, making
reviewing additions ugly. Accept it as a list. However, because of
things using the old interface, support a comma separated string being
passed as well.

Change-Id: I5adad696707b987f0fee7211b89e340d265d6bd9

manifests/init.pp

@@ -4,7 +4,7 @@ class statusbot(
   $nick = '',
   $password = '',
   $server = '',
-  $channels = '',
+  $channels = [],
   $auth_nicks = '',
   $wiki_user = '',
   $wiki_password = '',

templates/statusbot.config.erb

@@ -3,7 +3,11 @@ nick=<%= nick %>
 pass=<%= password %>
 server=<%= server %>
 port=6667
-channels=<%= channels %>
+<% if @channels.respond_to?('join') -%>
+channels=<%= @channels.join(',') %>
+<% else -%>
+channels=<%= @channels %>
+<% end -%>
 nicks=<%= auth_nicks %>
 lockfile=/var/run/statusbot/statusbot.pid
 log_config=/etc/statusbot/logging.config