Re-organize all client/server sample code to separate client and server classes into client and server packages, respectively.

Rename sample.ServerConfig class to sample.server.GemFireServer and apply the GemFireServer Gradle Plugin.

Change all 'spring.session.data.gemfire.*' and 'spring.session.data.geode.*' properties to use the SDG property prefixed with 'spring.data.gemfire.*'.

samples/javaconfig/gemfire-clientserver/src/main/java/sample/client/ClientConfig.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2017 the original author or authors.
+ *
+ * Licensed 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.
+ */
+
+package sample.client;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.data.gemfire.config.annotation.ClientCacheApplication;
+import org.springframework.data.gemfire.config.annotation.ClientCacheConfigurer;
+import org.springframework.data.gemfire.tests.integration.ClientServerIntegrationTestsSupport;
+import org.springframework.session.data.gemfire.config.annotation.web.http.EnableGemFireHttpSession;
+
+// tag::class[]
+@ClientCacheApplication(name = "SpringSessionDataGeodeJavaConfigSampleClient", logLevel = "error",
+	readTimeout = 15000, retryAttempts = 1, subscriptionEnabled = true) // <1>
+@EnableGemFireHttpSession(poolName = "DEFAULT") // <2>
+public class ClientConfig extends ClientServerIntegrationTestsSupport {
+
+	@Bean
+	ClientCacheConfigurer gemfireServerReadyConfigurer( // <3>
+			@Value("${spring.data.gemfire.cache.server.port:40404}") int cacheServerPort) {
+
+		return (beanName, clientCacheFactoryBean) -> waitForServerToStart("localhost", cacheServerPort);
+	}
+}
+// end::class[]