stop using hash as arguments to AutomatedDeployer

Signed-off-by: Dmitriy Kalinin <dmitriy@pivotallabs.com>
inject DeploymentAccount into AutomatedDeployer

Signed-off-by: Dmitriy Kalinin <dmitriy@pivotallabs.com>
fix path_root for DeploymentsRepository

Signed-off-by: Dmitriy Kalinin <dmitriy@pivotallabs.com>