add sample client.properties file

src/conf/client.properties

+#
+# 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.
+#
+
+#########  Security Properties  #########
+
+# SSL config
+
+metadata.enableTLS=false
+truststore.file=/path/to/truststore.jks
+cert.stores.credential.provider.path=jceks://file/path/to/credentialstore.jceks
+# following only required for 2-way SSL
+keystore.file=/path/to/keystore.jks
+
+# Authentication config
+
+# enabled:  true or false
+metadata.http.authentication.enabled=false
+# type:  simple or kerberos
+metadata.http.authentication.type=simple
+
+#########  Security Properties  #########