WHISTLE-1149: start mod_http_cache by default

autoload_configs/http_cache.conf.xml

@@ -0,0 +1,9 @@
+<configuration name="http_cache.conf" description="HTTP GET cache">
+  <settings>
+    <param name="max-urls" value="10000"/>
+    <param name="location" value="$${base_dir}/http_cache"/>
+    <param name="default-max-age" value="86400"/>
+    <param name="prefetch-thread-count" value="8"/>
+    <param name="prefetch-queue-size" value="100"/>
+  </settings>
+</configuration>

autoload_configs/modules.conf.xml

@@ -26,6 +26,7 @@
         <load module="mod_conference"/>
         <load module="mod_dptools"/>
         <load module="mod_expr"/>
+        <load module="mod_http_cache"/>
 
         <!-- Codec Interfaces -->
         <load module="mod_spandsp"/>