added documentation and test for ProxyPreserveHost option

README.md

@@ -759,6 +759,10 @@ Specifies the verbosity of the error log. Defaults to 'warn' for the global serv
 
 Specifies URLs you do not want to proxy. This parameter is meant to be used in combination with [`proxy_dest`](#proxy_dest).
 
+#####`proxy_preserve_host`
+
+Sets the [ProxyPreserveHost Directive](http://httpd.apache.org/docs/2.2/mod/mod_proxy.html#proxypreservehost).  true Enables the Host: line from an incoming request to be proxied to the host instead of hostname .  false sets this option to off (default).
+
 #####`options`
 
 Sets the [Options](http://httpd.apache.org/docs/current/mod/core.html#options) for the specified virtual host. Defaults to '['Indexes','FollowSymLinks','MultiViews']', as demonstrated below:

manifests/vhost.pp

@@ -478,6 +478,7 @@
   # proxy fragment:
   #   - $proxy_dest
   #   - $no_proxy_uris
+  #   - $proxy_preserve_host (true to set ProxyPreserveHost to on and false to off
   # rack fragment:
   #   - $rack_base_uris
   # redirect fragment:

spec/acceptance/vhost_spec.rb

@@ -102,6 +102,7 @@ class { 'apache': }
           proxy_pass => [
             { 'path' => '/foo', 'url' => 'http://backend-foo/'},
           ],
+    	  proxy_preserve_host   => true, 
         }
       EOS
       apply_manifest(pp, :catch_failures => true)
@@ -111,6 +112,7 @@ class { 'apache': }
       it { should contain '<VirtualHost \*:80>' }
       it { should contain "ServerName proxy.example.com" }
       it { should contain "ProxyPass" }
+      it { should contain "ProxyPreserveHost On" }
       it { should_not contain "<Proxy \*>" }
     end
   end

spec/defines/vhost_spec.rb

@@ -608,11 +608,17 @@
           :match => [/^  WSGIApplicationGroup %{GLOBAL}$/],
         },
         {
-          :title => 'should accept a wsgi pass authorization',
+          :title => 'should set wsgi pass authorization',
           :attr  => 'wsgi_pass_authorization',
           :value => 'On',
           :match => [/^  WSGIPassAuthorization On$/],
         },
+        {
+          :title => 'should set wsgi pass authorization false',
+          :attr  => 'wsgi_pass_authorization',
+          :value => 'Off',
+          :match => [/^  WSGIPassAuthorization Off$/],
+        },
         {
           :title => 'should contain environment variables',
           :attr  => 'access_log_env_var',