fix: change capitalisation of "pod" and "etcd" throughout

[craigbox]

POD and ETCD aren't acronyms, so they should never be SHOUTED written in all caps.

This PR is a very considered search and replace across the library. KUBELET_SYSTEM_PODS_ARGS should remain in caps, for example.

[matthyx]

Is it pod or Pod?

[yuleib]

@YiscahLevySilas1 - do we have any dependencies with other files / libraries which might be affected from this change ? (name convention or any other issue?)

[craigbox]

Is it pod or Pod?

That is a contentious question.
https://kubernetes.slack.com/archives/C1J0BPD2M/p1679212088970039

SIG Docs guidance is roughly 'When you're talking about a pod, you should say pod; when you're talking about a pod's API object, you should say Pod'.

(We don't have the markdown differentiation.)

[YiscahLevySilas1]

@craigbox Sorry for the delay here!
In the meantime we've had some changes in the repo and now require that PRs be opened from a branch in this repo and not a fork for tests to pass
@yuleib Perhaps we should block completely the option to open PRs from forks to master if we're not planning to approve them?

[craigbox]

In the meantime we've had some changes in the repo and now require that PRs be opened from a branch in this repo and not a fork for tests to pass. @yuleib Perhaps we should block completely the option to open PRs from forks to master if we're not planning to approve them?

Does that not restrict things such that only maintainers can contribute, as only they can create branches in the repo?

[yuleib]

@craigbox - We just inserted this option in the past week. The issue is that we cannot perform any test over opened forks because of the secrets which are related to the organization.
i still checking some options to allow forking for outside contributions and running the system tests / rego tests when it arrive to us (for e.g. if we can initiazlize it from our side fork and still see the tests because we are inside the org. ), that way we can allow outside forks (and inside the org. working only with branching )

[rotemamsa]

@yuleib any update on this issue lately?

[yuleib]

@rotemamsa - same as #323

[craigbox]

replacing with #513.