Polish contribution

Closes gh-6367

spring-boot-cli/src/it/resources/jar-command/jar.groovy

@@ -13,6 +13,7 @@ class Example implements CommandLineRunner {
 		println getClass().getResource('/resources/resource.txt')
 		println getClass().getResource('/static/static.txt')
 		println getClass().getResource('/templates/template.txt')
+		println getClass().getResource('/root.properties')
 		println template('template.txt', [world:'Mama'])
 	}
 }

spring-boot-cli/src/it/resources/war-command/war.groovy

@@ -10,6 +10,7 @@ class WarExample implements CommandLineRunner {
 
 	void run(String... args) {
 		println getClass().getResource('/org/apache/tomcat/InstanceManager.class')
+		println getClass().getResource('/root.properties')
 		throw new RuntimeException("onStart error")
 	}