Explicit @testinstance(PER_CLASS)

See junit-team/junit5#905
I will configure PER_CLASS by default when available

Author: sdeleuze

Diff for: src/test/kotlin/functional/IntegrationTests.kt

@@ -4,13 +4,15 @@ import org.junit.jupiter.api.AfterAll
 import org.junit.jupiter.api.BeforeAll
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.TestInstance
+import org.junit.jupiter.api.TestInstance.Lifecycle.*
 import org.springframework.http.MediaType.*
 import org.springframework.web.reactive.function.client.WebClient
 import org.springframework.web.reactive.function.client.bodyToFlux
 import org.springframework.web.reactive.function.client.bodyToMono
 import reactor.test.test
 import java.time.LocalDate
 
+@TestInstance(PER_CLASS)
 class IntegrationTests {
 
 	val application = Application(8181)