Set testGroups system property for spring-test Gradle test tasks

spring-test/spring-test.gradle

@@ -87,6 +87,7 @@ dependencies {
 
 task junit(type: Test) {
 	description = "Runs JUnit 4 and JUnit Jupiter tests."
+	systemProperty("testGroups", project.properties.get("testGroups"))
 	useJUnitPlatform {
 		excludeTags "failing-test-case"
 	}
@@ -98,6 +99,7 @@ task junit(type: Test) {
 
 task testNG(type: Test) {
 	description = "Runs TestNG tests."
+	systemProperty("testGroups", project.properties.get("testGroups"))
 	useTestNG()
 	scanForTestClasses = false
 	include(["**/testng/**/*Tests.class", "**/testng/**/*Test.class"])