Merge branch 'lib-differences' into 'master'

Resolve EE differences in the lib/ directory

See merge request gitlab-org/gitlab-ce!31582

lib/api/project_import.rb

@@ -59,6 +59,7 @@ module API
         }
         override_params = import_params.delete(:override_params)
+        filter_attributes_using_license!(override_params) if override_params
         project = ::Projects::GitlabProjectsImportService.new(
           current_user, project_params, override_params

lib/gitlab/project_search_results.rb

@@ -134,9 +134,11 @@ module Gitlab
       project.repository.commit(key) if Commit.valid_hash?(key)
     end
+    # rubocop: disable CodeReuse/ActiveRecord
     def project_ids_relation
-      project
+      Project.where(id: project).select(:id).reorder(nil)
     end
+    # rubocop: enabled CodeReuse/ActiveRecord
     def filter_milestones_by_project(milestones)
       return Milestone.none unless Ability.allowed?(@current_user, :read_milestone, @project)