Added place holders to deploy cmd

Signed-off-by: Phan Le <ple@pivotal.io>
Extract cpi deployer from deploy cmd

Signed-off-by: Phan Le <ple@pivotal.io>
Moved CPI manifest parsing into the deploy cmd

- Modified the cpi_deployer to take a parsed deployment

Signed-off-by: Phan Le <ple@pivotal.io>
Fix type

Signed-off-by: Phan Le <ple@pivotal.io>
Added CPI job installation to cpi deployer

- Refactored Deployment to a simple struct

Signed-off-by: Phan Le <ple@pivotal.io>