Extend one of the existing test to print the environment variables

Author: glimmerveen

containers/pax-exam-container-forked/src/test/java/org/ops4j/pax/exam/forked/ForkedTestContainerFactoryTest.java

@@ -146,6 +146,9 @@ public static class ClasspathTestActivator implements BundleActivator {
 
         @Override
         public void start(BundleContext bc) throws Exception {
+            System.out.println("PRINT_ENVIRONMENT_VARIABLES");
+            System.getenv().forEach((key, value) -> System.out.printf("%s=%s%n", key, value));
+
             Class<?> clazz = getClass().getClassLoader().loadClass(className);
 
             if (clazz == null) {