Add port scan to ServerProperties (server.scan=true)

Also moved ServerProperties to autoconfigure project.

spring-boot-autoconfigure/pom.xml

@@ -56,6 +56,11 @@
 			<artifactId>hibernate-entitymanager</artifactId>
 			<optional>true</optional>
 		</dependency>
+		<dependency>
+			<groupId>org.hibernate</groupId>
+			<artifactId>hibernate-validator</artifactId>
+			<optional>true</optional>
+		</dependency>
 		<dependency>
 			<groupId>org.hibernate.javax.persistence</groupId>
 			<artifactId>hibernate-jpa-2.0-api</artifactId>