Use Builder jar output by adding BundleGenerator as doLast() action

I verified that using the ```actions = [new BundleGenerator(...]``` method was not getting called and then the Builder()'s jar output was not being used.

My suggested fix was to add the BundleGenerator action to jarTask via doLast() and then also I added an integration test to ensure that the DS annotations generated classes are getting included in the jar.  Also, this fix seems to have fixed 3 other failing integration tests... at least on my local linux build.