Apply Entire Directory using kumactl

[doctorwu]

Description

It would be a useful feature to have the ability to apply all files inside a directory, without having to use fancy shell commands, i.e. xargs, like you can with kubectl.

For example:

kumactl apply -f some-dir/

[lplazas]

Happy to pick this up @jakubdyszkiewicz

[lplazas]

Hey all, I have a first pass implementation ready, but I’d appreciate some thoughts around this:
Should we restrict the files we apply to be .yaml or .yml (as I currently do here in the link below)? or should we try to apply every file and ignore if it isn't yaml?

https://github.com/kumahq/kuma/pull/8647/files#diff-1fe08e69b5b0c09a1604645df446a74ccf5123e8f7dd942520155640af802a7eR177

[michaelbeaumont]

@lplazas I'd say we should have the same behavior as kubectl here.

[lplazas]

@lplazas I'd say we should have the same behavior as kubectl here.

I just checked and if a single file is passed to kubectl apply it will read it and try to parse it regardless of the extension. If kubectl apply receives a dir, it will only pick up the files with yaml extension.

[github-actions]

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