Backport parameters for API::Users

This backports the EE specific parameters for API::Users, and wraps them
in a conditional.

lib/api/users.rb

@@ -51,6 +51,10 @@ module API
           optional :avatar, type: File, desc: 'Avatar image for user'
           optional :private_profile, type: Boolean, desc: 'Flag indicating the user has a private profile'
           all_or_none_of :extern_uid, :provider
+
+          if Gitlab.ee?
+            optional :shared_runners_minutes_limit, type: Integer, desc: 'Pipeline minutes quota for this user'
+          end
         end
         params :sort_params do
@@ -80,6 +84,10 @@ module API
         use :sort_params
         use :pagination
         use :with_custom_attributes
+
+        if Gitlab.ee?
+          optional :skip_ldap, type: Boolean, default: false, desc: 'Skip LDAP users'
+        end
       end
       # rubocop: disable CodeReuse/ActiveRecord
       get do