The default uploader type in Velero install not consistent with Velero server command

[qiuming-best]

Describe the problem/challenge you have

Describe the solution you'd like

If a user does not specify the uploader type in Velero install command when installing the default uploader would be Kopia, If a user does not specify the uploader type in Velero Helm chart when installing the default uploader would be Restic.

The reason is the default uploader type in Velero install is Kopia, while the default uploader type in Velero server is Restic.

Anything else you would like to add:

Environment:

• Velero version (use velero version):
• Kubernetes version (use kubectl version):
• Kubernetes installer & version:
• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):

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[reasonerjt]

The default value on server code is for compatibility with CRs created by older version.

[qiuming-best]

The setting for uploader in velero server has two entries

1. Velero install
2. helm chart For both velero install and helm chart the default uploader type is kopia, so we may not need to make changes.