Add actuator endpoint to expose ConfigurationProperties

This information should probably be also available from the console and log similar to AutoConfigurationReport.

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/ConfigurationPropertiesReportEndpointTests.java

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+/*
+ * Copyright 2013 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 org.springframework.boot.actuate.endpoint;
+
+import org.junit.Test;
+import org.springframework.boot.actuate.properties.ManagementServerProperties;
+import org.springframework.boot.autoconfigure.security.SecurityProperties;
+import org.springframework.boot.autoconfigure.web.ServerProperties;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import static org.hamcrest.Matchers.greaterThan;
+import static org.junit.Assert.assertThat;
+
+public class ConfigurationPropertiesReportEndpointTests extends
+		AbstractEndpointTests<ConfigurationPropertiesReportEndpoint> {
+
+	public ConfigurationPropertiesReportEndpointTests() {
+		super(Config.class, ConfigurationPropertiesReportEndpoint.class, "/configprops",
+				true, "endpoints.configprops");
+	}
+
+	@Test
+	public void invoke() throws Exception {
+		assertThat(getEndpointBean().invoke().size(), greaterThan(0));
+	}
+
+	@Configuration
+	@EnableConfigurationProperties
+	public static class Config {
+
+		@Bean
+		public ConfigurationPropertiesReportEndpoint endpoint() {
+			return new ConfigurationPropertiesReportEndpoint();
+		}
+
+		@Bean
+		public ServerProperties serverProperties() {
+			return new ServerProperties();
+		}
+
+		@Bean
+		public ManagementServerProperties managementServerProperties() {
+			return new ManagementServerProperties();
+		}
+
+		@Bean
+		public SecurityProperties securityProperties() {
+			return new SecurityProperties();
+		}
+	}
+}