fix(metadata): Adding default values for contact details and license fields

Author: saigiridhar21

samples/openapi3/client/petstore/python/setup.py

@@ -27,8 +27,8 @@
     name=NAME,
     version=VERSION,
     description="OpenAPI Petstore",
-    author="",
-    author_email="",
+    author="OpenAPI Generator community",
+    author_email="[email protected]",
     url="",
     keywords=["OpenAPI", "OpenAPI-Generator", "OpenAPI Petstore"],
     install_requires=REQUIRES,