separated validation module from the rest

spring-boot/validation/build.gradle

@@ -23,7 +23,6 @@ repositories {
 	mavenCentral()
 }
 
-
 dependencies {
 	implementation('org.springframework.boot:spring-boot-starter-data-jpa')
 	implementation('org.springframework.boot:spring-boot-starter-validation')
@@ -37,3 +36,7 @@ dependencies {
 	implementation('javax.xml.bind:jaxb-api:2.3.1')
 	implementation('org.javassist:javassist:3.23.1-GA')
 }
+
+test{
+	useJUnitPlatform()
+}

spring-boot/validation/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Tue Feb 06 12:27:20 CET 2018
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.6-bin.zip