Avoid including Optional wrapper in in scheduler thrift response message.

Bugs closed: AURORA-249

Reviewed at https://reviews.apache.org/r/19900/
Part 2 of converting from Packages to Metadata (client)

Bugs closed: AURORA-158

Reviewed at https://reviews.apache.org/r/19895/
Filtering safe domain results by hosts.

Bugs closed: AURORA-295

Reviewed at https://reviews.apache.org/r/19756/
Use a single VM for the dev cluster, manage processes with upstart.

Bugs closed: AURORA-299

Reviewed at https://reviews.apache.org/r/19939/
Fixup paths broken in previous vagrant commit, reference builds directly in dist dir.

Bugs closed: AURORA-299

Reviewed at https://reviews.apache.org/r/20011/
Before we start storing UNKNOWN (SANDBOX_DELETED) state
need to prepare for a graceful rollback of that change.

Bugs closed: AURORA-261

Reviewed at https://reviews.apache.org/r/19888/
Fix two clientv2 command-line bugs.

- Clientv2 bridge would crash and dump cookies if you didn't give it
  any command-line parameters.
- Clientv2 help formatting was messed up.

Bugs closed: aurora-307

Reviewed at https://reviews.apache.org/r/20010/
AURORA-234: Consider using markdown-style tables instead of HTML