Update cookbooks for Ubuntu 16.04 TLS

cookbooks/wordpress/recipes/database.rb

@@ -44,7 +44,6 @@ if is_local_host? db['host']
 
   mysql_service db['instance_name'] do
     port db['port']
-    version db['mysql_version']
     initial_root_password db['root_password']
     action [:create, :start]
   end
@@ -52,6 +51,11 @@ if is_local_host? db['host']
   socket = "/var/run/mysql-#{db['instance_name']}/mysqld.sock"
 
   if node['platform_family'] == 'debian'
+    directory "/var/run/mysqld" do
+      action :create
+      owner  "mysql"
+      group  "mysql"
+    end
     link '/var/run/mysqld/mysqld.sock' do
       to socket
       not_if 'test -f /var/run/mysqld/mysqld.sock'