[JAVA-2540] Migrated unit test to integration test as it bootsraps and calls a REST API

Author: fdpro

restx/src/test/java/restx/demo/rest/HelloResourceSpecUnitTest.java renamed to restx/src/test/java/restx/demo/rest/HelloResourceSpecIntegrationTest.java

@@ -7,7 +7,7 @@
 
 @RunWith(RestxSpecTestsRunner.class)
 @FindSpecsIn("specs/hello")
-public class HelloResourceSpecUnitTest {
+public class HelloResourceSpecIntegrationTest {
 
     /**
      * Useless, thanks to both @RunWith(RestxSpecTestsRunner.class) & @FindSpecsIn()