Add support for configuring SSL declaratively

Both Tomcat and Jetty can now be configured to use SSL via the
environment (typically application.properties or application.yml)

Closes #1084

spring-boot-samples/spring-boot-sample-tomcat-ssl/src/main/java/sample/tomcat/SampleTomcatSslApplication.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2012-2014 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.tomcat;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@ComponentScan
+@Configuration
+@EnableAutoConfiguration
+@EnableConfigurationProperties
+public class SampleTomcatSslApplication {
+
+	public static void main(String[] args) throws Exception {
+		SpringApplication.run(SampleTomcatSslApplication.class, args);
+	}
+}

spring-boot-samples/spring-boot-sample-tomcat-ssl/src/main/java/sample/tomcat/web/SampleController.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2012-2014 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.tomcat.web;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+@Controller
+public class SampleController {
+
+	@RequestMapping("/")
+	@ResponseBody
+	public String helloWorld() {
+		return "Hello, world";
+	}
+
+}