instructions to get kubeflow blueprints via kpt don't work management

[vsoch]

The instructions here:

kubeflow-gke-docs/content/en/docs/deploy/management-setup.md

Lines 46 to 51 in b393d70

	Alternatively, you can get the package by using `kpt`:
	```bash
	# Check out the latest Kubeflow
	kpt pkg get https://github.com/googlecloudplatform/kubeflow-distribution.git@master kubeflow-distribution
	cd kubeflow-distribution

Result in an error:

$ kpt pkg get https://github.com/googlecloudplatform/kubeflow-distribution.git@master kubeflow-distribution 
Error: Repository "https://github.com/googlecloudplatform/kubeflow-distribution.git@master" not found.

Details:
remote: Repository not found.
fatal: repository 'https://github.com/googlecloudplatform/kubeflow-distribution.git@master/' not found

It seems to work if you remove the AT branch:

$ kpt pkg get https://github.com/googlecloudplatform/kubeflow-distribution.git kubeflow-distribution 
Package "kubeflow-distribution":
Fetching https://github.com/googlecloudplatform/kubeflow-distribution@master
From https://github.com/googlecloudplatform/kubeflow-distribution
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
Adding package "".
Error: Kptfile at "/tmp/kpt-get-2328470898/tests/management/resources" has an old version ("v1alpha1") of the Kptfile schema.
Please update the package to the latest format by following https://kpt.dev/installation/migration.

I'm new to kpt so I can't give a suggestion, but using a version (e.g., a la the docs that are live https://googlecloudplatform.github.io/kubeflow-gke-docs/docs/deploy/management-setup/) doesn't seem to work either. From the help it seems like it expects a package path?

kpt pkg get REPO_URI[.git]/PKG_PATH[@VERSION] [LOCAL_DEST_DIRECTORY] [flags]

[vsoch]

Still working on figuring this out:

Error: Kptfile at "/tmp/kpt-get-3436280820/tests/management/resources" has an old version ("v1alpha1") of the Kptfile schema.
Please update the package to the latest format by following https://kpt.dev/installation/migration. 

[vsoch]

I'll try installing from GitHub for now.