Breaking Coverage Site into Template

[ryanmurakami]

This PR was inspired by comments in #41. It breaks out the coverage site markup into a separate file and uses a templating engine to render it.

@mhdawson I used pystache to do the template rendering. Let me know if you see any issues with running this on the hardware.

[mhdawson]

It will probably run, but it introduces a new dependency that is not already installed by default on our CI machines. How much does using pystache simplify the generation and can it be installed through pip ?

We don't have pip installed yet by default on the CI machines but I think that is going to happen, so installation through pip as part of Ansible in the future may be reasonable.

[ryanmurakami]

It is installable via pip: pip install pystache. I looked around for best practices around templating without an engine, but couldn't find a clean way to do it. I can revisit it if pulling pystache in is going to be too difficult.

[mhdawson]

I'm ok if @jbergstroem does not have any concerns. @jbergstroem can you chime in here.

[Trott]

Should this stay open?

[ryanmurakami]

@Trott I can resolve the conflicts. I think the PR is still relevant.

[Trott]

I believe coverage stuff is now in the main repo. Closing, but feel free to comment or re-open if you think I'm wrong about that.