Extract ginkgo tests to test-unit script

Signed-off-by: Adam Stegman <astegman@pivotallabs.com>
Add test-integration script

Clones BOSH locally to run integration tests with

Signed-off-by: Adam Stegman <astegman@pivotallabs.com>
Disable travis installation

It fails because we have a test fixture using the main package

Signed-off-by: Adam Stegman <astegman@pivotallabs.com>