Add namespace context for upcoming experiments

3 experiments: remove known fields, trimmed skip trial copy and trial
registration with social signin.

ee/app/controllers/trials_controller.rb

@@ -41,6 +41,9 @@ class TrialsController < ApplicationController
     @result = GitlabSubscriptions::ApplyTrialService.new.execute(apply_trial_params)
 
     if @result&.dig(:success)
+      record_experiment_user(:remove_known_trial_form_fields, namespace_id: @namespace.id)
+      record_experiment_user(:trimmed_skip_trial_copy, namespace_id: @namespace.id)
+      record_experiment_user(:trial_registration_with_social_signin, namespace_id: @namespace.id)
       record_experiment_conversion_event(:remove_known_trial_form_fields)
       record_experiment_conversion_event(:trimmed_skip_trial_copy)
       record_experiment_conversion_event(:trial_registration_with_social_signin)

ee/spec/controllers/trials_controller_spec.rb

@@ -226,6 +226,9 @@ RSpec.describe TrialsController do
 
       it { is_expected.to redirect_to("/#{namespace.path}?trial=true") }
       it 'calls the record conversion method for the experiments' do
+        expect(controller).to receive(:record_experiment_user).with(:remove_known_trial_form_fields, namespace_id: namespace.id)
+        expect(controller).to receive(:record_experiment_user).with(:trimmed_skip_trial_copy, namespace_id: namespace.id)
+        expect(controller).to receive(:record_experiment_user).with(:trial_registration_with_social_signin, namespace_id: namespace.id)
         expect(controller).to receive(:record_experiment_conversion_event).with(:remove_known_trial_form_fields)
         expect(controller).to receive(:record_experiment_conversion_event).with(:trimmed_skip_trial_copy)
         expect(controller).to receive(:record_experiment_conversion_event).with(:trial_registration_with_social_signin)