(#11667) add try_files support in vhost and location directives

Try_files is how NGINX files the files to serve particularly in a
fallback mode. Using an array for try_files will interate through
these options in the generated configuration file.

manifests/resource/location.pp

@@ -11,6 +11,7 @@
 #   [*proxy*]       - Proxy server(s) for a location to connect to. Accepts a single value, can be used in conjunction
 #                     with nginx::resource::upstream
 #   [*ssl*]         - Indicates whether to setup SSL bindings for this location.
+#   [*try_files*]   - An array of file locations to try
 #   [*option*]      - Reserved for future use
 #
 # Actions:
@@ -31,6 +32,7 @@ define nginx::resource::location(
   $index_files = ['index.html', 'index.htm', 'index.php'],
   $proxy       = undef,
   $ssl         = false,
+  $try_files   = undef,
   $option      = undef,
   $location
 ) {

manifests/resource/vhost.pp

@@ -17,6 +17,7 @@
 #   [*ssl_cert*]         - Pre-generated SSL Certificate file to reference for SSL Support. This is not generated by this module.
 #   [*ssl_key*]          - Pre-generated SSL Key file to reference for SSL Support. This is not generated by this module.
 #   [*www_root*]         - Specifies the location on disk for files to be read from. Cannot be set in conjunction with $proxy
+#   [*try_files*]        - Specifies the locations for files to be checked as an array. Cannot be used in conjuction with $proxy.
 #
 # Actions:
 #
@@ -42,7 +43,8 @@ define nginx::resource::vhost(
   $ssl_key          = undef,
   $proxy            = undef,
   $index_files      = ['index.html', 'index.htm', 'index.php'],
-  $www_root         = undef
+  $www_root         = undef,
+  $try_files        = undef
 ) {
 
   File {
@@ -82,6 +84,7 @@ define nginx::resource::vhost(
     ssl       => $ssl,
     location  => '/',
     proxy     => $proxy,
+    try_files => $try_files,
     www_root  => $www_root,
     notify    => Class['nginx::service'],
   }

templates/vhost/vhost_location_directory.erb

@@ -1,4 +1,8 @@
   location <%= location %> {
     root  <%= www_root %>;
     index <% index_files.each do |i| %> <%= i %> <% end %>; 
+
+    <% if has_variable?("try_files") then %>
+    try_files <% try_files.each do |try| -%> <%= try %> <% end -%>; 
+    <% end %> 
   }