acu123016 - [db_mysql] in post_restore_cleanup action, check and remove restored socket file.
acu123016 - [db_mysql] Improve comments on removing of the restored socket file.
Merge pull request #430 from rightscale/white_14_01_acu123016_remove_socket_file_after_restoring_database_volume

White 14 01 acu123016 remove socket file after restoring database volume