feat(helm): add service-account features to egress and ingress

[lahabana]

Add features that existed for the CP but not ingress/egress:

• imagePullSecrets (for egress)
• serviceAccountAnnotations
• automountServiceAccountToken

Fix #7824

Checklist prior to review

• Link to relevant issue as well as docs and UI issues --
• This will not break child repos: it doesn't hardcode values (.e.g "kumahq" as a image registry) and it will work on Windows, system specific functions like syscall.Mkfifo have equivalent implementation on the other OS --
• Tests (Unit test, E2E tests, manual test on universal and k8s) --
• Do you need to update UPGRADE.md? --
• Does it need to be backported according to the backporting policy? (this GH action will add "backport" label based on these file globs, if you want to prevent it from adding the "backport" label use no-backport-autolabel label) --
• Do you need to explicitly set a > Changelog: entry here or add a ci/ label to run fewer/more tests?

[slonka]

Do we need any other tests?

[lahabana]

Do we need any other tests?

To test what there's plenty of tests that show that the files are not changed except in our case where we exercise these new flags no?