Initial spirng-session-data-geode setup.

(cherry picked from commit c5a1ee021016d37dda5e5eb96320ee1be9869314)
Signed-off-by: John Blum <jblum@pivotal.io>

samples/javaconfig/gemfire-p2p/src/main/java/sample/Config.java

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+/*
+ * Copyright 2014-2016 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;
+
+import java.util.Properties;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.data.gemfire.CacheFactoryBean;
+import org.springframework.session.data.gemfire.config.annotation.web.http.EnableGemFireHttpSession;
+
+// tag::class[]
+@EnableGemFireHttpSession // <1>
+public class Config {
+
+	@Bean
+	Properties gemfireProperties() { // <2>
+		Properties gemfireProperties = new Properties();
+
+		gemfireProperties.setProperty("name", "GemFireP2PHttpSessionSample");
+		gemfireProperties.setProperty("mcast-port", "0");
+		gemfireProperties.setProperty("log-level",
+				System.getProperty("sample.httpsession.gemfire.log-level", "warning"));
+		gemfireProperties.setProperty("jmx-manager", "true");
+		gemfireProperties.setProperty("jmx-manager-start", "true");
+
+		return gemfireProperties;
+	}
+
+	@Bean
+	CacheFactoryBean gemfireCache() { // <3>
+		CacheFactoryBean gemfireCache = new CacheFactoryBean();
+
+		gemfireCache.setClose(true);
+		gemfireCache.setProperties(gemfireProperties());
+
+		return gemfireCache;
+	}
+}
+// end::class[]