Extra new line when finishing a stage

Signed-off-by: Jesse Zhang <jz@pivotallabs.com>
Use consistent event log rendering for 3 more stages

- Preparing DNS
- Creating bound missing VMs
- Binding instance VMs

Signed-off-by: Jesse Zhang <jz@pivotallabs.com>
Wait for nats-server to come up before integration tests

Signed-off-by: Adam Stegman <astegman@pivotallabs.com>
Better error message when job release is not specified

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