Fixed memcache not working issue

ee/core/variables.py

@@ -83,7 +83,7 @@ class EEVariables():
                        .format(codename=ee_platform_codename))
     ee_php = ["php5-fpm", "php5-curl", "php5-gd", "php5-imap",
               "php5-mcrypt", "php5-xdebug", "php5-common", "php5-readline",
-              "php5-mysql", "php5-cli", "memcached"]
+              "php5-mysql", "php5-cli", "php5-memcache", "memcached"]
 
     # MySQL repo and packages
     ee_mysql_repo = ("deb http://repo.percona.com/apt {codename} main"