Carvelize the autoscaler deployment being

[saji-pivotal]

(This is used to request new product features)

Describe the feature request

• As a user, I want autoscaler available as an optional package on the TKG cluster. There should be no regressions from previous editions of TKG
• The user must have a choice to enable or disable autoscaler
• If autoscaler is enabled, the TKG cluster must install the autoscaler package, and it must run with the parameters specified by the user
• The tricky bit is that the autoscaler package must be installed on the management cluster only when we're in the process of installing a workload cluster. We do not need to install it otherwise

Describe alternatives you've considered

• Installing the autoscaler package irrespective of the workload cluster being available. This is not feasible because we want to maintain a 1:1 relationship between autoscaler deployments and workload clusters

Affected product area (please put an X in all that apply)

• APIs
• Addons
• CLI
• Docs
• IAM
• Installation
• Plugin
• Security
• Test and Release
• User Experience

Additional context