Minor refactoring in PackageBuilder.

Also convert to Rspec 3 styles assertions.

Signed-off-by: Phan Le <ple@pivotallabs.com>
Bump rugged gem.
Rescue KeepAliveDisconnected when trying to connect to the director.

- Change required when HTTPClient updated
- Also change to Rspec 3 syntax.

Signed-off-by: Phan Le <ple@pivotallabs.com>
Benchmark running Bosh commands in integration tests.

Signed-off-by: Phan Le <ple@pivotallabs.com>