Fix Python 3.7 syntax error in yum_repository.

lib/ansible/modules/packaging/os/yum_repository.py

@@ -615,9 +615,7 @@ class YumRepo(object):
 
 def main():
     # Module settings
-    module = AnsibleModule(
     argument_spec = dict(
-            async=dict(type='bool'),
         bandwidth=dict(),
         baseurl=dict(type='list'),
         cost=dict(),
@@ -671,7 +669,12 @@ def main():
         timeout=dict(),
         ui_repoid_vars=dict(),
         username=dict(),
-        ),
+    )
+
+    argument_spec['async'] = dict(type='bool')
+
+    module = AnsibleModule(
+        argument_spec=argument_spec,
         add_file_common_args=True,
         supports_check_mode=True,
     )

test/compile/python3.7-skip.txt

@@ -1 +0,0 @@
-lib/ansible/modules/packaging/os/yum_repository.py