Bad cookie default configuration disabling cache when not needed

[msalaj]

there are common cookies that will disable batcache because there is bad default cookie configuration. Currently, all cookies that begin with wp will cause cache to bypass. But there are no wp cookies I am aware of that should disable cache. But there are cookies like wp_lang or wpl_* from wpeka gdpr plugin, that will cause batcache to not cache the page. I run into this issue in Pressable hosting sertvice, where they are using batcache for their distributed Edge Cache implementation, but there is no way to change configuration of it

I made pull request with my proposed changes in default behavior

#105