Userid is not autocollected from the cookies

[MaxShehovtsov]

JSSDK sets ai_user cookie which should be associated with the request. NodeSDK does parse ai_session cookie but doesn't look at ai_user.

[gzepeda]

As a proposal to solve this issue the RequestDataHelper class needs to be modified:

• Add a method like _getUser() similar to the _getSessionId() present in this class that retrieves that information.
• Add a call to the previous method on the getRequestTags function to populate the tag corresponding to the user retrieved from the previous method.

Let us now.
@georgejolema
@AlexBulankou
@oscargarciacolon

[KamilSzostak]

@gzepeda looks good to me :) Thanks for fixing this issue!