Add authorization server sample

servlet/spring-boot/java/oauth2/authorization-server/build.gradle

@@ -0,0 +1,25 @@
+plugins {
+	id 'org.springframework.boot' version '2.5.0'
+	id 'io.spring.dependency-management' version '1.0.10.RELEASE'
+	id "nebula.integtest" version "7.0.9"
+	id 'java'
+}
+
+repositories {
+	jcenter()
+	maven { url "https://repo.spring.io/snapshot" }
+}
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+	implementation 'org.springframework.security.experimental:spring-security-oauth2-authorization-server:0.1.2'
+
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	testImplementation 'org.springframework.security:spring-security-test'
+
+	integTestImplementation 'net.sourceforge.htmlunit:htmlunit'
+}
+
+tasks.withType(Test).configureEach {
+	useJUnitPlatform()
+}