Upgrade to JUnit 5.0 GA!

Issue: SPR-15737

Author: sbrannen

build.gradle

@@ -52,9 +52,9 @@ configure(allprojects) { project ->
 	ext.jaxbVersion          = "2.2.11"
 	ext.jaxwsVersion         = "2.2.11"
 	ext.jettyVersion         = "9.4.7.RC0"
-	ext.junitJupiterVersion  = '5.0.0-RC3'
-	ext.junitPlatformVersion = '1.0.0-RC3'
-	ext.junitVintageVersion  = "4.12.0-RC3"
+	ext.junitJupiterVersion  = '5.0.0'
+	ext.junitPlatformVersion = '1.0.0'
+	ext.junitVintageVersion  = "4.12.0"
 	ext.kotlinVersion        = '1.1.4-3'
 	ext.log4jVersion         = '2.9.0'
 	ext.nettyVersion         = "4.1.15.Final"