Support transparent rmi over classes.

[Fuud]

Class will be eligible to transparent-rmi if:

1. it is implementing marked interface java.rmi.Remote
2. object of this class is wrapped with Cloud::createRmiProxy

For exapmle, take a look at test: https://github.com/gridkit/nanocloud/pull/39/files#diff-b3d424985422fd195ad32149e97b0876a961f3b2793f6b4f425714673612cd6eL855

It allows to transparently pass objects between nodes without extracting interfaces (useful for 3rd party objects).

Also it fixes following typing problem:

public class TestStarter {
    interface RemoteSupplier extends Remote{
        int get();
    }

    static class MyRemoteSupplier implements RemoteSupplier{
        @Override
        public int get() {
            return 0;
        }
    }

    public static void main(String[] args) {
        Cloud cloud = CloudFactory.createCloud();

        ViNode node = cloud.node("node");
        ViProps.at(node).setLocalType();

        final MyRemoteSupplier remoteSupplier = new MyRemoteSupplier();

        node.exec(new Runnable() {
            @Override
            public void run() {
                remoteSupplier.get();
            }
        });

    }
}

Before this patch will result in: java.lang.IllegalArgumentException: Can not set final TestStarter$MyRemoteSupplier field TestStarter$1.val$remoteSupplier to $Proxy1
It was because classes was passed as set of interfaces.

Now rmi classes passed as classes and proxy created as subclass of passed objects.

To implement this PR I have added two libraries: bytebuddy and objenesis. Both are shaded into resulting jar and will not conflict with other versions in classpath.