Run XPack usage actions on local node

[nielsbauman]

These actions solely need the cluster state, they can run on any node.

Relates #101805

[elasticsearchmachine]

Pinging @elastic/es-data-management (Team:Data Management)

[elasticsearchmachine]

Hi @nielsbauman, I've created a changelog YAML for you.

[nielsbauman]

I'm not actually sure if we (Data Management) own this feature. I'm happy to change the label if another team owns it.

[dakrone]

LGTM, the only thing that I'm a little uneasy about is that one of these many many transport actions (I did not audit them all) is injecting some service that only works correctly on the master node. I assume that if it did, then we'd hopefully find it in tests though.

[nielsbauman]

LGTM, the only thing that I'm a little uneasy about is that one of these many many transport actions (I did not audit them all) is injecting some service that only works correctly on the master node. I assume that if it did, then we'd hopefully find it in tests though.

I did go over all transport actions and I did not identify any actions that depend on some service that only works correctly on the master node. I might have missed something of course, but I also assume that tests would help us out in this case (and I've run a few CIs on this branch already).