Add settings for autopep8

Makefile.am

@@ -103,6 +103,9 @@ TESTS = tools/check-unused-dependencies
 rat:
 	java -jar $(top_srcdir)/ci/apache-rat-0.13-SNAPSHOT.jar -E $(top_srcdir)/ci/rat-regex.txt  -d $(top_srcdir)
 
+autopep8:
+	@autopep8 -i -r $(top_srcdir)
+
 #
 # These are rules to make clang-format easy and fast to run. Run it with e.g.
 #    make -j clang-format
@@ -164,3 +167,4 @@ help:
 	@echo 'rel-candidate    recreate a signed relelease candidate source package and a signed git tag'
 	@echo 'release          recreate a signed release source package and a signed git tag'
 	@echo 'tidy             run clang-tidy in fix-it mode'
+	@echo 'autopep8         run autopep8 over python files'

setup.cfg

@@ -0,0 +1,18 @@
+#  Licensed to the Apache Software Foundation (ASF) under one
+#  or more contributor license agreements.  See the NOTICE file
+#  distributed with this work for additional information
+#  regarding copyright ownership.  The ASF licenses this file
+#  to you under the Apache License, Version 2.0 (the
+#  "License"); you may not use this file except in compliance
+#  with the License.  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+[pep8]
+max-line-length = 132