Re-exclude rhel79 from compile-only matrix in patch builds (#1325)

Author: eramongodb

.evergreen/config_generator/components/compile_only.py

@@ -61,6 +61,13 @@ def generate_tasks():
             if any(pattern in distro_name for pattern in ['power8', 'zseries']):
                 patchable = False
 
+            # In etc/calc_release_version.py:
+            #   error: unknown option `format=...'
+            #   usage: git tag ...
+            #      or: ...
+            if distro_name == 'rhel79':
+                patchable = False
+
             res.append(
                 EvgTask(
                     name=name,

.evergreen/generated_configs/tasks.yml

@@ -168,6 +168,7 @@ tasks:
   - name: compile-only-rhel79-release-shared-impls
     run_on: rhel79-large
     tags: [compile-only, rhel79, release, shared, impls]
+    patchable: false
     commands:
       - func: setup
       - func: fetch_c_driver_source