Use binaries for vagrant up.

This is a significant speedup - we now skip building mesos from source.

Before: Bringing up the devtools took 24 minutes:
vagrant up  36.41s user 4.28s system 2% cpu 24:20.66 total

In this version it takes less than 8 minutes:
vagrant up devtools  31.22s user 3.14s system 7% cpu 7:43.25 total

So now a full new Aurora cluster takes less than 13 min:
vagrant up  102.64s user 12.44s system 15% cpu 12:47.19 total

Testing Done:
vagrant destroy
vagrant up
Verified that job submission and all components work.

Bugs closed: AURORA-8

Reviewed at https://reviews.apache.org/r/16200/