added PoP information

[adaptive]

• PoP CF information for better understanding of worker distribution.
• Change of country collection method.
• X forwarded typo IP
• Worker Inception as a way to understand how many live workers.
• change on global variables

[boynet]

Thanks, I am not 100% sure about the worker inception? seems like it will always be undefined?

[adaptive]

Missed the most important bit of code. On LogDNA I am isolating workers per inception, and then understanding how many are alive per datacenter.