wip. rate limiting
[COOK-3080] - update readme, fix whitespace in template
Merge branch 'COOK-3080'
add charset utf-8 and server_tokens off at default nginx.conf template
add nginx logrotate config
default-site html page use prefix path when install from source
remove specify default site access log path
Don't install ruby-dev for passenger
Remove passenger use_global_queue its obsolete in recent version
include 'nginx::source' before 'nginx::ohai_plugin'

ohai_plugin didn't work with source install option.
source recipe rewrite node['nginx']['binary'] and ohai_plugin use it, so 'source' recipe must be included before 'ohai_plugin'.