Include JSON Path test dep in gradle build

complete/build.gradle

@@ -27,6 +27,7 @@ targetCompatibility = 1.8
 dependencies {
     compile("org.springframework.boot:spring-boot-starter-web")
     testCompile('org.springframework.boot:spring-boot-starter-test')
+    testCompile('com.jayway.jsonpath:json-path')
 }
 
 task wrapper(type: Wrapper) {