support ipxe scripts over data uris in ipxe script urls

[displague]

Description

from https://github.com/tinkerbell/boots/pull/192#discussion_r687810189

Why is this needed

Fixes: #110

How Has This Been Tested?

Tests are failing, I haven't looked into how to fix this yet. I think the existing mocks may not be sufficient.

How are existing users impacted? What migration steps/scripts do we need?

Checklist:

I have:

• [ ] updated the documentation and/or roadmap (if required)
• [ ] added unit or e2e tests
• [ ] provided instructions on how to upgrade

[jeremytanner]

@displague still working this one?

[displague]

@jeremytanner I would like to see this work continued for #110. I am stalled on it.

@jacobweinstock do you see what I'd like to have here (based on the test)? Is this the right place for this change and tests?

[jacobweinstock]

Hey @displague, apologies for the lack of response here. I will put this on my priority list for this week/next and update here when I have something concrete to provide. Again, sorry for the delay.

[jacobweinstock]

:( still haven't got around to this quite yet.

[tstromberg]

PR overall looks good - is it just stuck on there being a failing test?

[crayzeigh]

Based on comment history it looks like this one is still awaiting @jacobweinstock to prioritize and review. Assigning failing test label based on description

[cprivitere]

@displague more rebasing for you

[jacobweinstock]

@displague, looks like this is still in draft and has some merge conflicts. will wait for updates before reviewing?

[jacobweinstock]

The code base has moved on quite a bit. Feel free to reopen.