Restrict ApplicationsTests#logs to CF 2.x line

- The DopplerClient does not work with Loggregator >= 107.0.0, and we
  cannot obtain "recent" logs. Until this is fixed, we cannot cut a
  release. That is the only blocking test.
- See cloudfoundrygh-1181, cloudfoundrygh-1230, cloudfoundrygh-1237

Author: Kehrlann

integration-test/src/test/java/org/cloudfoundry/operations/ApplicationsTest.java

@@ -487,6 +487,7 @@ public void listTasks() throws IOException {
     }
 
     @Test
+    @IfCloudFoundryVersion(lessThan = CloudFoundryVersion.PCF_4_v2)
     public void logs() throws IOException {
         String applicationName = this.nameFactory.getApplicationName();