Add OAuth2 sample to Gradle build

samples/grpc-oauth2/build.gradle

@@ -15,6 +15,10 @@ java {
 	}
 }
 
+processTestAot {
+	enabled = false
+}
+
 repositories {
 	mavenCentral()
 	maven { url 'https://repo.spring.io/milestone' }
@@ -35,6 +39,7 @@ dependencies {
 	implementation 'io.grpc:grpc-services'
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 	testImplementation 'org.springframework.grpc:spring-grpc-test'
+	testImplementation 'org.springframework.experimental.boot:spring-boot-testjars-maven:0.0.3'
 	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 }
 

samples/settings.gradle

@@ -7,6 +7,7 @@ pluginManagement {
 }
 
 include 'grpc-reactive'
+include 'grpc-oauth2'
 include 'grpc-secure'
 include 'grpc-server'
 include 'grpc-server-netty-shaded'