clean up gevent

Author: blink1073

.evergreen/generated_configs/variants.yml

@@ -332,7 +332,7 @@ buildvariants:
   # Green framework tests
   - name: green-gevent-rhel8
     tasks:
-      - name: .test-standard
+      - name: .test-standard .sync
     display_name: Green Gevent RHEL8
     run_on:
       - rhel87-small

.evergreen/scripts/generate_config.py

@@ -297,7 +297,7 @@ def create_green_framework_variants():
     variants = []
     host = DEFAULT_HOST
     for framework in ["gevent"]:
-        tasks = [".test-standard"]
+        tasks = [".test-standard .sync"]
         expansions = dict(GREEN_FRAMEWORK=framework)
         display_name = get_variant_name(f"Green {framework.capitalize()}", host)
         variant = create_variant(tasks, display_name, host=host, expansions=expansions)