Move "arch" service name case from recipe into attributes, too

Default value is "/etc/default/rsyslog" but cased for redhat
to be "/etc/sysconfig/rsyslog"

Set user/group/priv_separation outside of platform case block
with sane defaults. Override in platform case block as needed.
Moved max_message_size up where it belongs, not dangling at
the bottom of the file.

Add default attributes to determine user and group for syslog and whether to use privlege seperation

Also add per-host attribute per ticket comment

* no longer uses the rsyslog['server'] attribute to search
* default server role to search for is `loghost`, see README
* change attributes from Ruby symbols to strings
* add a port attribute to specify a port other than 514 (still default)
* extensive README.md updates describing behavior

* Use 'default.rb' for attributes files when specific files not
  necessary
* Update search in rsyslog recipe.

* Use 'default.rb' for attributes files when specific files not
  necessary
* Update search in rsyslog recipe.

The 'first' method caused typeerror and no method was a nilclass error,
so the search for fqdn uses map block, per the recipes search on the wiki.

Added protocol selection support, UDP vs TCP.

Handle rsyslog.d files - delete client remote.conf on the server and
server.conf on the client.

Updated README.