[Bug] error: git cmd when following docs

[kevin85421]

Why are these changes needed?

See #288 (comment) for more details.

• I can reproduce this issue with kubectl v1.21.0

$ kubectl create -k "github.com/ray-project/kuberay/manifests/cluster-scope-resources?ref=${KUBERAY_VERSION}&timeout=90s"
error: git cmd = '/usr/local/bin/git fetch --depth=1 origin v0.3.0&timeout=90s': exit status 128

$ kubectl version --client=true --short=true
Client Version: v1.21.0

• Fix this issue by updating kubectl to v1.22.0+

$ kubectl create -k "github.com/ray-project/kuberay/manifests/cluster-scope-resources?ref=${KUBERAY_VERSION}&timeout=90s"
namespace/ray-system created
customresourcedefinition.apiextensions.k8s.io/rayclusters.ray.io created
customresourcedefinition.apiextensions.k8s.io/rayjobs.ray.io created
customresourcedefinition.apiextensions.k8s.io/rayservices.ray.io created

$ kubectl version --client=true --short=true
Client Version: v1.22.0

• You can upgrade your kubectl by the following commands

curl -LO "https://dl.k8s.io/release/v1.22.0/bin/darwin/amd64/kubectl"
chmod +x kubectl
sudo cp kubectl $YOUR_PATH

Related issue number

Closes #288

Checks

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • This PR is not tested :(

[kevin85421]

cc @tekumara

[DmitriGekhtman]

Thanks for finding the root cause here.

If you using an earlier K8s client version, you can achieve the desired effect by pulling the 0.4.0 branch and creating the
K8s objects from the local configs.
Would you mind expressing that info here?

[kevin85421]

Thanks for finding the root cause here.

If you using an earlier K8s client version, you can achieve the desired effect by pulling the 0.4.0 branch and creating the K8s objects from the local configs. Would you mind expressing that info here?

Thank you for your review! Updated.