AURORA-213: Pin aurora at pants==0.0.14-dev2

Testing Done:
git clean -fdx && ./pants py src/main/python/apache/aurora/client/bin:aurora_admin
src/test/sh/org/apache/aurora/e2e/test_end_to_end.sh

Bugs closed: AURORA-213

Reviewed at https://reviews.apache.org/r/18229/
Implement help message generation for the noun/verb framework.

Bugs closed: aurora-202

Reviewed at https://reviews.apache.org/r/17948/