net-fs/nfs-utils: improve NFS versions handling

[HanabishiRecca]

Improve NFS versions handling as nfs-utils provide NFSv4-only mode of operation (without backward compatibility with v2 and v3).

Rebase of #33175

[gentoo-bot]

Pull Request assignment

Submitter: @HanabishiRecca
Areas affected: ebuilds
Packages affected: net-fs/nfs-utils

net-fs/nfs-utils: @gentoo/base-system

Linked bugs

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[gentoo-repo-qa-bot]

Pull request CI report

Report generated at: 2024-01-23 14:03 UTC
Newest commit scanned: 14e1014
Status: ✅ good

There are existing issues already. Please look into the report to make sure none of them affect the packages in question:
https://qa-reports.gentoo.org/output/gentoo-ci/15aa8e7d52/output.html

[gentoo-repo-qa-bot]

Pull request CI report

Report generated at: 2024-01-23 14:32 UTC
Newest commit scanned: ee6745a
Status: ❌ broken

New issues caused by PR:
https://qa-reports.gentoo.org/output/gentoo-ci/6901f92315/output.html#net-fs/nfs-utils

There are existing issues already. Please look into the report to make sure none of them affect the packages in question:
https://qa-reports.gentoo.org/output/gentoo-ci/6901f92315/output.html