#1574 - Update template syntax in nginx module

modules/nginx/templates/nginx.conf.erb

 user <%= scope.lookupvar('nginx::params::user') %> <%= scope.lookupvar('nginx::params::group') %>;
-worker_processes <%= worker_processes %>;
+worker_processes <%= @worker_processes %>;
 <% if scope.lookupvar('lsbdistcodename') == 'precise' -%>
 include /etc/nginx/modules-enabled/*.conf;
 <% end -%>
 
 error_log /var/log/nginx/error.log notice;
 pid /var/run/nginx.pid;
 
 events {
-  worker_connections <%= worker_connections %>;
+  worker_connections <%= @worker_connections %>;
   <% if scope.lookupvar('nginx::params::multi_accept') == 'on' %>multi_accept on;<% end %>
 }
 worker_rlimit_nofile <%= scope.lookupvar('nginx::params::worker_rlimit_nofile') %>;
 
 http {
   include /etc/nginx/mime.types;
   default_type application/octet-stream;
 
   log_format main '$remote_addr - $remote_user [$time_local] "$request" '
                   '$status $bytes_sent "$http_referer" '
@@ skipping 22 matching lines @@
   gzip on;
   gzip_disable "msie6";
   gzip_min_length 100;
   gzip_buffers 4 8k;
   gzip_types text/plain text/xhtml text/css application/x-javascript text/xml application/atom+xml application/rss+xml;
   <% end %>
 
   ssl_ciphers "EECDH+ECDSA+AESGCM EECDH+aRSA+AESGCM EECDH+ECDSA+SHA384 EECDH+ECDSA+SHA256 EECDH+aRSA+SHA384 EECDH+aRSA+SHA256 EECDH EDH+aRSA -3DES DES-CBC3-SHA !aNULL !eNULL !LOW !MD5 !EXP !PSK !SRP !DSS !RC4";
   ssl_prefer_server_ciphers on;
   ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
-  <% if ssl_session_cache == 'on' %>
+  <% if @ssl_session_cache == 'on' %>
   ssl_session_cache shared:SSL:1m;
   <% else %>
   ssl_session_cache off;
   <% end %>
 
   types_hash_max_size 2048;
 
   server_names_hash_bucket_size 64;
 
   <% if @geoip_country %>
   geoip_country <%= @geoip_country %>;
   <% end %>
   <% if @geoip_city %>
   geoip_city <%= @geoip_city %>;
   <% end %>
 
   include /etc/nginx/conf.d/*.conf;
   include /etc/nginx/sites-enabled/*;
 }