kubernetes: add symlink for secrets-store-csi-providers

[bcressey]

Issue number:
Fixes #1524.

Description of changes:
Add a symlink to a path where providers can create their socket.

Testing done:
Installed the AWS provider for the secrets store CSI driver by following the usage instructions. Verified that the pod had access to the secret.

Verified that the sockets were created in the expected paths:

bash-5.0# ls -latr /etc/kubernetes/secrets-store-csi-providers
lrwxrwxrwx. 1 root root 40 Apr 30 14:13 /etc/kubernetes/secrets-store-csi-providers -> /var/lib/kubelet/providers/secrets-store

bash-5.0# ls -latr /var/lib/kubelet/providers/secrets-store/aws.sock   
srwxr-xr-x. 1 root root 0 Apr 30 14:16 /var/lib/kubelet/providers/secrets-store/aws.sock

bash-5.0# ls -latr /var/lib/kubelet/providers/secrets-store/aws.sock   
srwxr-xr-x. 1 root root 0 Apr 30 14:15 /var/lib/kubelet/plugins/csi-secrets-store/csi.sock

Terms of contribution:

By submitting this pull request, I agree that this contribution is dual-licensed under the terms of both the Apache License, version 2.0, and the MIT license.

[arnaldo2792]

⛵

[rverma-dev]

@bcressey how can we use this particular ami which contains the fix?

[jhaynes]

@rverma-nsl We'll be releasing this in our 1.1.0 release which in the works right now.