MINOR: Use .asf.yaml to direct github notifications to JIRA and mailing lists (#8521)

Reviewers: Ismael Juma <ismael@juma.me.uk>

.asf.yaml

@@ -0,0 +1,22 @@
+# 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.
+
+notifications:
+  commits:      commits@kafka.apache.org
+  issues:       jira@kafka.apache.org
+  pullrequests: jira@kafka.apache.org
+  jira_options: link label