test: assert schedule, backup-location, must-gather, setup commands in root help

[Copilot]

Why the changes were made

TestCommandArchitecture's "all major commands exist" subtest only asserted backup, restore, nabsl-request, nonadmin, client, and version in the root --help output. It omitted schedule, backup-location, must-gather, and setup, even though cmd/root.go registers all of them. The test therefore provided no coverage against accidental removal of those commands.

This mirrors the fix applied to oadp-1.4 in #212 and is the intended basis for cherry-pick to oadp-1.6 and oadp-1.5.

How to test the changes made

• Extend the majorCommands slice in integration_test.go to include the four missing commands:

majorCommands := []string{"backup", "restore", "schedule", "backup-location", "nabsl-request", "nonadmin", "client", "must-gather", "setup", "version"}

Run the targeted subtest:

go test -run 'TestCommandArchitecture/all_major_commands_exist' .

Expected: ok github.com/migtools/oadp-cli.

[openshift-ci]

Hi @Copilot. Thanks for your PR.

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Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Copilot, kaovilai

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