Move keyrings.alt from optional [dev] extra to core dependencies

[dheerajturaga]

keyring is a core dependency of airflow-ctl, but it requires a backend
to function. On desktop systems a native backend (macOS Keychain, GNOME
Keyring, Windows Credential Vault) is available, but in containerized
environments like the breeze CI image none exists. keyrings.alt provides
a file-based fallback backend for exactly this case.

Moving keyrings.alt to core dependencies is safe: keyring's backend
selection is priority-based, so native backends are always preferred when
available. keyrings.alt only kicks in as a fallback on systems without
one.

[bugraoz93]

Thanks for the PR! I think we shouldn't add this as a dependency as it is not recommended for production, only for development. We should not provide one. The user should select it most OS have it's own and IT teams manages it for them in bigger use cases
We can consider creating a docker image which then we can consider how to handle this use case

[dheerajturaga]

Thanks for the PR! I think we shouldn't add this as a dependency as it is not recommended for production, only for development. We should not provide one. The user should select it most OS have it's own and IT teams manages it for them in bigger use cases
We can consider creating a docker image which then we can consider how to handle this use case

@bugraoz93 in that case, should we add airflow-ctl[dev] to Docker.ci instead?

[bugraoz93]

Thanks for the PR! I think we shouldn't add this as a dependency as it is not recommended for production, only for development. We should not provide one. The user should select it most OS have it's own and IT teams manages it for them in bigger use cases
We can consider creating a docker image which then we can consider how to handle this use case

@bugraoz93 in that case, should we add airflow-ctl[dev] to Docker.ci instead?

I meant separate small image without even have Airflow core or any other distributions. This deserves a discussion thread and some kind of lazy consensus/voting to be aligned. We can still add airflow-ctl[dev] in ci image to, that is not the one released or running in our local breeze envs. So adding like that make sense to eliminate for development