AEROGEAR-1019 Advanced path params

This PR is based on https://github.com/aerogear/aerogear-controller/pull/63 and will be rebased after that PR is processed. To review only the code that was added by this task then the review can start from commit 7e2eb2f52ea89bd4364fd6e11b0bff172ed1bd2d. 

For an example of using the new feature this [branch](https://github.com/danbev/aerogear-controller-demo/tree/example-for-aerogear-1019-advanced-path-params) contains a route which can be invoked like this:
```
curl -i --header "Accept: application/json" "http://localhost:8080/aerogear-controller-demo/findcar/red/subpath/BMW"
```