ClassFinder.infinispanClasses does not work corrctly

In order to filter out the classes that pertain to infinispan, the following condition is used:

      for (String path : javaClassPath.split(File.pathSeparator)) {
         if (path.contains("infinispan")) {
            files.add(new File(path));
         }
      }

The path.contains("infinispan") logic is broken: we should instead look into the path and all the children dirs for the string "infinispan". This logic only works if you run the suite in a directory named "infinispan".