feat(fetchResults): use default serializers by default

But allow additional serializers to be passed via kwarg "serializers"

Author: wiwichips

dcp/api/fetch_results.py

@@ -11,12 +11,12 @@
 from .job_serializers import default_serializers, deserialize
 
 def fetch_results_maker(fetch_results_js):
-    def fetch_results(*args):
+    def fetch_results(*args, serializers=default_serializers):
         serialized_results = dry.aio.blockify(fetch_results_js)(*args)
 
         results = []
         for element in serialized_results:
-            deserialized_value = deserialize(element['value'], default_serializers)
+            deserialized_value = deserialize(element['value'], serializers)
             slice_number = int(element['slice'])
 
             results.append({ 'slice': slice_number, 'value': deserialized_value })