Anton Bretting

Add preapply hook

16

As discussed in https://github.com/roboll/helmfile/issues/1940 this PR adds a `preapply` hook that will run every time the release is applied, even if there is no changes to the release.

presync hook not running with apply

11

Hi. I am trying to use the presync hook, but it does not seem to run when using helmfile apply, and only with helmfile sync. In the documentation it seems...