Do not populate s3 credentials from env vars in cli

openappstack/cluster.py

@@ -192,17 +192,6 @@ PROMETHEUS_ENABLE_INGRESS={prometheus_enable_ingress}
             ))
             log.info("Created %s", self.dotenv_file)
 
-        # Store some secrets that are passed to us as env vars.
-        env_secrets = [
-            ('S3_ACCESS_KEY','s3_access_key'),
-            ('S3_SECRET_KEY','s3_secret_key'),
-            ]
-        for (secret_env_var, secret_filename) in env_secrets:
-            value = os.environ.get(secret_env_var)
-            if value is not None:
-                with open("{}/{}".format(self.secret_dir, secret_filename), 'w') as f:
-                    f.write(value)
-
         # Set self.data_loaded to True because the data in the class now
         # reflects the data in the file.
         self.data_loaded = True