[Controller] Profile controller for multi user namespace initialization

[Bobgy]

/cc @chensun @IronPan
Part of #3241

Per discussion with Kubeflow team, each application should have its own controller for configuring user namespaces with required resources.

Therefore, we should write KFP's profile controller that configures KFP required resources in each user's namespace.

Current list of required resources:

• minio secret
• mlmd grpc configmap

Resources we are considering:

• visualization server
• artifact fetcher server

I will start with minio secret and mlmd grpc configmap as a POC.

[Bobgy]

POC implementation in: Bobgy/manifests@cab423b

It is a deployment only solution, main logic is in Bobgy/manifests@cab423b#diff-762b01268bcc6313528cc44fffc68e77

Behavior:

• It creates minio artifact secret and mlmd grpc configmap if they don't exist.
• And if user has customized those resources, they won't be overwritten.
• The design is to make sure KFP only initializes default configurations, while users can do their own customizations to the deployment.

References:

• https://metacontroller.app/guide/create/
• https://metacontroller.app/api/compositecontroller/#sync-hook-request
• https://metacontroller.app/api/compositecontroller/

[Bobgy]

/close
Current list of required resources are supported.
Will open separate issues for future resources

[k8s-ci-robot]

@Bobgy: Closing this issue.

In response to this:

/close
Current list of required resources are supported.
Will open separate issues for future resources

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