Enable experiment activation option for running the experiments on selected users

[sunnybit]

Enable experiment activation option for running the experiments on selected users(% of traffic, device specificity). Also, include a stickiness parameter in the cookie for the users not selected in an experiment.

[rawls238]

Is there any use case that can't be covered by wrapping in a namespace? For instance, only exposing an experiment to 30% of users is relatively simple to do with namespaces.

I also do not know what you mean by a stickiness parameter so hoping you can clarify

[sunnybit]

@rawls238 Stickiness was referred to user experience. After the experiment started, users who are not selected for the experiment should persist unitl the experiment is alive.