Add Optional Tracking for CloudFlare

[bhubbard]

For those sites that use CloudFlare it would be great to track their proxy info:

$_SERVER['HTTP_CF_IPCOUNTRY'] and $_SERVER['HTTP_CF_RAY']

[johnkiely1]

Hi @bhubbard,

Thanks for the suggestion, we will look into this when priorities allow.

[imjoehaines]

Hey @bhubbard, we automatically record all $_SERVER values that start with "HTTP_". These should already be attached to errors in the "request" tab as Cf-Ipcountry and Cf-Ray as part of the "headers" object