Skeletal changes for eureka 2.X.

All the source code is removed. This only contains the modules required for eureka 2.X

We will add the files required from 1.X as we need them.
Adding a placeholder java file in each module.

Otherwise the jar target fails.
Adding placeholder test files to keep cloudbees happy.
Merge pull request #154 from NiteshKant/2.x

Skeletal changes for 2.x