Fix missing module in VSA serializers

This change adds the missing CycleAnalytics namespace for the value
stream analytics (former cycle analytics) serializers to prevent code
reloading errors in development.

ee/app/controllers/groups/analytics/cycle_analytics/value_streams_controller.rb

@@ -11,14 +11,14 @@ class Groups::Analytics::CycleAnalytics::ValueStreamsController < Analytics::App
   end
 
   def index
-    render json: Analytics::GroupValueStreamSerializer.new.represent(value_streams)
+    render json: Analytics::CycleAnalytics::GroupValueStreamSerializer.new.represent(value_streams)
   end
 
   def create
     value_stream = @group.value_streams.build(value_stream_params)
 
     if value_stream.save
-      render json: Analytics::GroupValueStreamSerializer.new.represent(value_stream)
+      render json: Analytics::CycleAnalytics::GroupValueStreamSerializer.new.represent(value_stream)
     else
       render json: { message: 'Invalid parameters', payload: { errors: value_stream.errors } }, status: :unprocessable_entity
     end

ee/app/serializers/analytics/cycle_analytics/group_value_stream_entity.rb

 # frozen_string_literal: true
 
 module Analytics
+  module CycleAnalytics
     class GroupValueStreamEntity < Grape::Entity
       expose :name
       expose :id
@@ -14,4 +15,5 @@ module Analytics
         object.id || object.name # use the name `default` if the record is not persisted
       end
     end
+  end
 end

ee/app/serializers/analytics/cycle_analytics/group_value_stream_serializer.rb

 # frozen_string_literal: true
 
 module Analytics
+  module CycleAnalytics
     class GroupValueStreamSerializer < BaseSerializer
-    entity ::Analytics::GroupValueStreamEntity
+      entity ::Analytics::CycleAnalytics::GroupValueStreamEntity
+    end
   end
 end