PYTHON-5372 Convert Remaining Variants to Use Common Tasks

Author: blink1073

.evergreen/generated_configs/variants.yml

@@ -253,7 +253,7 @@ buildvariants:
   # Enterprise auth tests
   - name: auth-enterprise-rhel8
     tasks:
-      - name: .test-non-standard
+      - name: .test-non-standard .auth
     display_name: Auth Enterprise RHEL8
     run_on:
       - rhel87-small

.evergreen/scripts/generate_config.py

@@ -214,7 +214,7 @@ def create_enterprise_auth_variants():
     for host in ["rhel8", "macos", "win64"]:
         expansions = dict(TEST_NAME="enterprise_auth", AUTH="auth")
         display_name = get_variant_name("Auth Enterprise", host)
-        tasks = [".test-non-standard"]
+        tasks = [".test-non-standard .auth"]
         if host != "rhel8":
             tasks = [".test-non-standard !.pypy .auth"]
         variant = create_variant(tasks, display_name, host=host, expansions=expansions)