Upgrade to JUnit 5.0.0-M1

Issue: SPR-13575

build.gradle

@@ -58,8 +58,8 @@ configure(allprojects) { project ->
 	ext.jpaVersion           = "2.1.1"
 	ext.jtaVersion           = "1.2"
 	ext.junitVersion         = "4.12"
-	ext.junitJupiterVersion  = '5.0.0-SNAPSHOT'
-	ext.junitPlatformVersion = '1.0.0-SNAPSHOT'
+	ext.junitJupiterVersion  = '5.0.0-M1'
+	ext.junitPlatformVersion = '1.0.0-M1'
 	ext.log4jVersion         = '2.6.1'
 	ext.nettyVersion         = "4.1.1.Final"
 	ext.okhttpVersion        = "2.7.5"
@@ -129,8 +129,6 @@ configure(allprojects) { project ->
 
 	repositories {
 		maven { url "https://repo.spring.io/libs-release" }
-		// For JUnit Platform and Jupiter snapshots:
-		maven { url 'https://oss.sonatype.org/content/repositories/snapshots' }
 	}
 
 	dependencies {

spring-test/src/test/java/org/springframework/test/context/junit/SpringJUnitJupiterTestSuite.java

@@ -19,6 +19,7 @@ package org.springframework.test.context.junit;
 import org.junit.platform.runner.IncludeEngines;
 import org.junit.platform.runner.JUnitPlatform;
 import org.junit.platform.runner.SelectPackages;
+import org.junit.platform.runner.UseTechnicalNames;
 import org.junit.runner.RunWith;
 
 /**
@@ -36,5 +37,6 @@ import org.junit.runner.RunWith;
 @RunWith(JUnitPlatform.class)
 @IncludeEngines("junit-jupiter")
 @SelectPackages("org.springframework.test.context.junit.jupiter")
+@UseTechnicalNames
 public class SpringJUnitJupiterTestSuite {
 }