Foreign schemas work for process pool services

This commit brings jail service up to date with changes introduced earlier for process pool services which are able to access foreign defined schema now.

src/middlewared/middlewared/plugins/jail.py

@@ -22,7 +22,7 @@
 
 from middlewared.common.attachment import FSAttachmentDelegate
 from middlewared.schema import Bool, Dict, Int, List, Str, accepts
-from middlewared.service import CRUDService, job, private
+from middlewared.service import CRUDService, job, private, filterable
 from middlewared.service_exception import CallError, ValidationErrors
 from middlewared.utils import filter_list
 from middlewared.validators import IpInUse, MACAddr
@@ -43,13 +43,7 @@ def __init__(self, *args, **kwargs):
         # We want debug for jails starting/stopping
         os.environ['IOCAGE_DEBUG'] = 'TRUE'
 
-    # FIXME: foreign schemas cannot be referenced when
-    # using `process_pool`
-    # @filterable
-    @accepts(
-        List('query-filters', default=[]),
-        Dict('query-options', additional_attrs=True),
-    )
+    @filterable
     def query(self, filters=None, options=None):
         """
         Query all jails with `query-filters` and `query-options`.
@@ -103,7 +97,6 @@ def query(self, filters=None, options=None):
             self.logger.debug('Failed to get list of jails', exc_info=True)
 
         return filter_list(jails, filters, options)
-    query._fiterable = True
 
     @accepts(
         Dict(