[Blocked][CRD][3/n] Delete CRD v1alpha1

[kevin85421]

Why are these changes needed?

This PR is the step 3 of #1209 (comment).

rm -r apis/ray/v1alpha1

# Update CRD YAMLs
make manifests

# Update CRD YAMLs in the KubeRay operator Helm chart.
make sync

Related issue number

#1481
#1482
#1209

Checks

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

[hongchaodeng]

LGTM

[kevin85421]

[Update]: The Ray Autoscaler fetches information about RayCluster from the Kubernetes API Server. However, it currently has the CRD apiVersion hard-coded to v1alpha1. Therefore, if we remove CRD v1alpha1 in this PR, the Ray Autoscaler will fail to retrieve information from the Kubernetes API server. That's why test-rayservice-sample-yamls-nightly-operator fails consistently.

[Plan]:

• v1.0.0, targeted for the end of Oct. 2023, supports Ray 2.4.0 and later versions.
• KubeRay will release v1.1.0 when Ray releases either Ray 2.9.0 or Ray 2.10.0. From then on, KubeRay v1.1.0 will only support Ray 2.7.1 and subsequent versions.

[kevin85421]

Close this PR in favor of #1771