Really enable cacheing

.travis.yml

@@ -1,4 +1,7 @@
 sudo: false
+cache:
+  directories:
+    - $HOME/.m2
 language: java
 before_install:
   - git config user.name "$GIT_NAME"

spring-cloud-config-sample/src/test/java/sample/ApplicationTests.java

@@ -16,7 +16,6 @@ import org.springframework.boot.test.SpringApplicationConfiguration;
 import org.springframework.boot.test.TestRestTemplate;
 import org.springframework.cloud.config.server.ConfigServerTestUtils;
 import org.springframework.context.ConfigurableApplicationContext;
-import org.springframework.test.annotation.DirtiesContext;
 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 import org.springframework.test.context.web.WebAppConfiguration;