Lloyd Brown

I've added a small amount of code that attempts to detect the presence of clevis keys in the volume automatically

@oniko It does not, at least not obviously. I will look through the clevis tools (which are just bash wrappers to `cryptsetup`, among other things), including from their github version,...

I've submitted a [pull request](https://github.com/latchset/clevis/pull/317) to add an option to allow passing of arbitrary parameters to the underlying `cryptsetup open`, when unlocking via clevis. Feel free to put this on...

This is just a quick, minimally-tested version, so feel free to give feedback here, if I've made any egregious errors, etc.

@sergio-correia @sarroutbi Is there anything I can do to shepherd this process along? It's not so urgent that it must happen now or anything. I just wasn't sure what kind...

@sergio-correia, @sarroutbi I realize it's been a while for this PR, but I'd still love to see it get merged, if possible. We're starting to see more and more use...

@sarroutbi You're absolutely right. I totally forgot to do that. Should be there now.

I'm reviewing the logs from last night's failed build tests. Given that [my test](https://github.com/latchset/clevis/actions/runs/3950634686/jobs/6916671470#step:7:51) seems to have passed, and [another one](https://github.com/latchset/clevis/actions/runs/3950634686/jobs/6916671470#step:7:58) was the one that failed, this seems like a...