cli: Fix login issues with explicit :443 port

[neoaggelos]

Summary

References #2965

Changes

Drop the explicit :443 port number from the oauth server address if present.

Testing

Test locally, with http.redirect-to-tls enabled and disabled. Login works as expected.

Regressions

There should not be any, 443 is the default HTTPS port

Notes for Reviewers

This does not fix the issue on the server side, it only makes sure that the CLI does not suffer from it.

Checklist

• Scope: The referenced issue is addressed, there are no unrelated changes.
• Compatibility: The changes are backwards compatible with existing API, storage, configuration and CLI, according to the compatibility commitments in README.md for the chosen target branch.
• Documentation: Relevant documentation is added or updated.
• Changelog: Significant features, behavior changes, deprecations and fixes are added to CHANGELOG.md.
• Commits: Commit messages follow guidelines in CONTRIBUTING.md, there are no fixup commits left.