Summary:
This make use of the the setup we have at Litho, which should make
it easier to keep them in sync.
It creates proper source jars, AARs (without bundling in unwanted
transitive deps) and POMs.
Closes https://github.com/facebook/Sonar/pull/104
Reviewed By: priteshrnandgaonkar
Differential Revision: D8638912
Pulled By: passy
fbshipit-source-id: ff4921c0683e9b6f859085b542ceae840a7e8291
