Upgrade Spring Boot to 2.0.0.RELEASE

Closes gh-1007

samples/boot/jdbc/spring-session-sample-boot-jdbc.gradle

@@ -9,7 +9,7 @@ dependencies {
 	compile "nz.net.ultraq.thymeleaf:thymeleaf-layout-dialect"
 	compile "org.webjars:bootstrap"
 	compile "org.webjars:html5shiv"
-	compile "org.webjars:webjars-locator"
+	compile "org.webjars:webjars-locator-core"
 	compile "com.h2database:h2"
 
 	testCompile "org.springframework.boot:spring-boot-starter-test"

samples/boot/jdbc/src/main/java/sample/config/SecurityConfig.java

@@ -35,7 +35,7 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter {
 	@Override
 	public void configure(WebSecurity web) {
 		web
-			.ignoring().antMatchers("/h2-console/**");
+			.ignoring().requestMatchers(PathRequest.toH2Console());
 	}
 	// @formatter:on