PHPCS fixes for wp-cache-config-sample.php

[ghost]

WPCS fixes via PHPCS.

[stodorovic]

It's sample file for wp-cache-config.php. Function wp_cache_replace_line parses line by line and it isn't possible to use few lines (eg. Array( ...).
So, I think that's better to we ignore this file now. Maybe we can improve it in the future, but it could make side effects with current code.

[stodorovic]

I'm not sure because wp_cache_setting will override these changes. I'm just looking and I think that we need to improve wp_cache_setting, wp_cache_replace_line, wp_cache_update_rejected_pages and probably something more.
I'd like to improve regular expression https://github.com/Automattic/wp-super-cache/blob/master/wp-cache-phase2.php#L1086 before we continue with this file.

[stodorovic]

I just created first version - PR #487. It works by my quick testing. Please review it and test it. I see more places which should be improved, current code isn't perfect, but good for start. I'll continue tomorrow if I find free time.