Pantheon redis settings

pantheon-redis-settings.patch

diff --git a/templates/CRM/common/civicrm.settings.php.template b/templates/CRM/common/civicrm.settings.php.template
index 41518ca..21dc8fe 100644
--- a/templates/CRM/common/civicrm.settings.php.template
+++ b/templates/CRM/common/civicrm.settings.php.template
@@ -281,6 +281,22 @@ if (!defined('CIVICRM_DOMAIN_ID')) {
  */
 
 /**
+* Redis Caching
+* Using Redis Caching via an extention instead of database -- uncomment below to use.
+* based on https://github.com/ChrisChinchilla/com.schwartzmedia.rediscache
+*/
+
+if (!empty($pantheon_conf['redis_client_host'])) {
+  define( 'CIVICRM_DB_CACHE_CLASS', 'Redis' );
+  define( 'CIVICRM_DB_CACHE_HOST', $pantheon_conf['redis_client_host'] );
+  define( 'CIVICRM_DB_CACHE_PORT', $pantheon_conf['redis_client_port'] );
+  define( 'CIVICRM_DB_CACHE_PASSWORD', $pantheon_conf['redis_client_password'] );
+  define( 'CIVICRM_DB_CACHE_TIMEOUT', 3600 );
+  define( 'CIVICRM_DB_CACHE_PREFIX', 'pantheon-redis-civicrm:' );
+
+} else {
+
+/**
  * If you have a memcache server configured and want CiviCRM to make use of it,
  * set the following constant.  You should only set this once you have your memcache
  * server up and working, because CiviCRM will not start up if your server is
@@ -332,6 +348,8 @@ if (!defined('CIVICRM_MEMCACHE_PREFIX')) {
   define( 'CIVICRM_MEMCACHE_PREFIX', '' );
 }
 
+} // end Pantheon Redis check
+
 /**
  * If you have multilingual site and you are using the "inherit CMS language"
  * configuration option, but wish to, for example, use fr_CA instead of the