move from fork to spawn

Author: mfeurer

scripts/run_auto-sklearn_for_metadata_generation.py

@@ -152,7 +152,7 @@
                                         metric=automl_arguments['metric'],
                                         cost_for_crash=get_cost_of_crash(automl_arguments['metric']),
                                         abort_on_first_run_crash=False,
-                                        pynisher_context='fork')
+                                        pynisher_context='spawn')
             run_info, run_value = ta.run_wrapper(
                 RunInfo(
                     config=config,