PYTHON-4889 Use shrub.py for green framework tests (#1951)

Author: blink1073

.evergreen/config.yml

@@ -2247,19 +2247,6 @@ axes:
         variables:
           MOD_WSGI_VERSION: "4"
 
-  # Choice of Python async framework
-  - id: green-framework
-    display_name: "Green Framework"
-    values:
-      - id: "eventlet"
-        display_name: "Eventlet"
-        variables:
-          GREEN_FRAMEWORK: "eventlet"
-      - id: "gevent"
-        display_name: "Gevent"
-        variables:
-          GREEN_FRAMEWORK: "gevent"
-
   # Install and use the driver's C-extensions?
   - id: c-extensions
     display_name: "C Extensions"
@@ -3412,6 +3399,52 @@ buildvariants:
     PYTHON_BINARY: /opt/python/3.13/bin/python3
   tags: [versionedApi_tag]
 
+# Green framework tests.
+- name: eventlet-rhel8-py3.9
+  tasks:
+    - name: .standalone
+  display_name: Eventlet RHEL8 py3.9
+  run_on:
+    - rhel87-small
+  expansions:
+    GREEN_FRAMEWORK: eventlet
+    AUTH: auth
+    SSL: ssl
+    PYTHON_BINARY: /opt/python/3.9/bin/python3
+- name: gevent-rhel8-py3.9
+  tasks:
+    - name: .standalone
+  display_name: Gevent RHEL8 py3.9
+  run_on:
+    - rhel87-small
+  expansions:
+    GREEN_FRAMEWORK: gevent
+    AUTH: auth
+    SSL: ssl
+    PYTHON_BINARY: /opt/python/3.9/bin/python3
+- name: eventlet-rhel8-py3.12
+  tasks:
+    - name: .standalone
+  display_name: Eventlet RHEL8 py3.12
+  run_on:
+    - rhel87-small
+  expansions:
+    GREEN_FRAMEWORK: eventlet
+    AUTH: auth
+    SSL: ssl
+    PYTHON_BINARY: /opt/python/3.12/bin/python3
+- name: gevent-rhel8-py3.12
+  tasks:
+    - name: .standalone
+  display_name: Gevent RHEL8 py3.12
+  run_on:
+    - rhel87-small
+  expansions:
+    GREEN_FRAMEWORK: gevent
+    AUTH: auth
+    SSL: ssl
+    PYTHON_BINARY: /opt/python/3.12/bin/python3
+
 - matrix_name: "tests-fips"
   matrix_spec:
     platform:
@@ -3460,21 +3493,6 @@ buildvariants:
     - ".4.2"
     - ".4.0"
 
-- matrix_name: "tests-python-version-green-framework-rhel8"
-  matrix_spec:
-    platform: rhel8
-    python-version: "*"
-    green-framework: "*"
-    auth-ssl: "*"
-  exclude_spec:
-   # Don't test green frameworks on these Python versions.
-   - platform: rhel8
-     python-version: ["pypy3.9", "pypy3.10", "3.13"]
-     green-framework: "*"
-     auth-ssl: "*"
-  display_name: "${green-framework} ${python-version} ${platform} ${auth-ssl}"
-  tasks: *all-server-versions
-
 - matrix_name: "tests-python-version-supports-openssl-102-test-ssl"
   matrix_spec:
     platform: rhel7

.evergreen/scripts/generate_config.py

@@ -481,10 +481,24 @@ def create_versioned_api_tests():
     return variants
 
 
+def create_green_framework_variants():
+    variants = []
+    tasks = [".standalone"]
+    host = "rhel8"
+    for python, framework in product([CPYTHONS[0], CPYTHONS[-2]], ["eventlet", "gevent"]):
+        expansions = dict(GREEN_FRAMEWORK=framework, AUTH="auth", SSL="ssl")
+        display_name = get_display_name(f"{framework.capitalize()}", host, python=python)
+        variant = create_variant(
+            tasks, display_name, host=host, python=python, expansions=expansions
+        )
+        variants.append(variant)
+    return variants
+
+
 ##################
 # Generate Config
 ##################
 
-variants = create_versioned_api_tests()
+variants = create_green_framework_variants()
 # print(len(variants))
 generate_yaml(variants=variants)