Move EE only codes to their EE modules

app/models/audit_event.rb

 class AuditEvent < ActiveRecord::Base
   prepend EE::AuditEvent
-  include Gitlab::Utils::StrongMemoize
 
   serialize :details, Hash # rubocop:disable Cop/ActiveRecordSerialize
 

app/models/lfs_object.rb

@@ -7,7 +7,6 @@ class LfsObject < ActiveRecord::Base
   has_many :projects, through: :lfs_objects_projects
 
   scope :with_files_stored_locally, -> { where(file_store: [nil, LfsObjectUploader::Store::LOCAL]) }
-  scope :with_files_stored_remotely, -> { where(file_store: LfsObjectUploader::Store::REMOTE) }
 
   validates :oid, presence: true, uniqueness: true
 

app/models/namespace.rb

@@ -52,7 +52,6 @@ class Namespace < ActiveRecord::Base
   after_commit :refresh_access_of_projects_invited_groups, on: :update, if: -> { previous_changes.key?('share_with_group_lock') }
 
   before_create :sync_share_with_group_lock_with_parent
-  before_create :sync_membership_lock_with_parent
   before_update :sync_share_with_group_lock_with_parent, if: :parent_changed?
   after_update :force_share_with_group_lock_on_descendants, if: -> { share_with_group_lock_changed? && share_with_group_lock? }
 
@@ -164,10 +163,6 @@ class Namespace < ActiveRecord::Base
     Gitlab.config.lfs.enabled
   end
 
-  def actual_size_limit
-    Gitlab::CurrentSettings.repository_size_limit
-  end
-
   def shared_runners_enabled?
     projects.with_shared_runners.any?
   end
@@ -297,12 +292,6 @@ class Namespace < ActiveRecord::Base
     end
   end
 
-  def sync_membership_lock_with_parent
-    if parent&.membership_lock?
-      self.membership_lock = true
-    end
-  end
-
   def force_share_with_group_lock_on_descendants
     return unless Group.supports_nested_groups?
 

ee/app/models/ee/audit_event.rb

 module EE
   module AuditEvent
     extend ActiveSupport::Concern
+    extend ::Gitlab::Utils::Override
 
+    override :author_name
     def author_name
       details[:author_name].presence || user&.name
     end

ee/app/models/ee/lfs_object.rb

@@ -10,6 +10,7 @@ module EE
       after_destroy :log_geo_event
 
       scope :geo_syncable, -> { with_files_stored_locally }
+      scope :with_files_stored_remotely, -> { where(file_store: LfsObjectUploader::Store::REMOTE) }
     end
 
     private

ee/app/models/ee/namespace.rb

@@ -37,6 +37,8 @@ module EE
 
       validate :validate_plan_name
       validate :validate_shared_runner_minutes_support
+
+      before_create :sync_membership_lock_with_parent
     end
 
     module ClassMethods
@@ -102,6 +104,16 @@ module EE
       actual_plan&.name || FREE_PLAN
     end
 
+    def actual_size_limit
+      ::Gitlab::CurrentSettings.repository_size_limit
+    end
+
+    def sync_membership_lock_with_parent
+      if parent&.membership_lock?
+        self.membership_lock = true
+      end
+    end
+
     def shared_runner_minutes_supported?
       if has_parent?
         !Feature.enabled?(:shared_runner_minutes_on_root_namespace)