Global Privacy Control (Firefox) is sent as integer

[linux019]

Type of issue

Bug

Description

The issue is that this flag had added this to Prebid.js before it was approved for the ORTB specs.
The first proposal was with integer, but it was then changed and approved as string.

InteractiveAdvertisingBureau/openrtb#123
InteractiveAdvertisingBureau/openrtb#123 (comment)

Prebid server decodes it as string
https://github.com/prebid/prebid-server/blob/106f6e450a2f6ab3ce986299468b9f657f4a0826/openrtb_ext/request_wrapper.go#L1234

Steps to reproduce

Test page

Expected results

GPC should be a string in the auction request
"regs": {
"ext": {
"gpc": "1"
}
},

Actual results

Platform details

Only Firefox support GPC

Prebid.js/src/fpd/enrichment.js

Line 132 in e39d671

deepSetValue(regs, 'ext.gpc', 1);

Other information

#8925