[WIP] Try running tests on helix

[HaoK]

🍿 🔥 🚒 🎆

[natemcmaster]

Looks like the Helix SDK isn't loading correctly in MSbuild.exe. It's likely this problem: https://natemcmaster.com/blog/2017/11/11/msbuild-task-with-dependencies/#binding-redirects-and-version-conflicts

[HaoK]

First set of results are trickling in https://mc.dot.net/#/user/aspnetcore/pr~2Faspnet~2Faspnetcore/ci/20190109.34

There were some build issues with all of the functional tests when trying the exec task, so I took all of those out for now. Servers were all throwing build errors with something about duplicate metadata/attribute existing from some kind of shared source I think. I'll dig into that more once the simple tests are mostly working

I just hardcoded the test project list for now since passing them as parameters appeared to be too long since we have so many projects.

[HaoK]

Looks like there are a lot of failures due to missing 'sln' file, I will start mass skipping those tests

Identity tests are failing due to no local db on the helix machines (same issue as EF core functionals)

[natemcmaster]

I'm uncomfortable with how many Skip's this adds. I would be okay with making them ConditionalFact and skipping when running in Helix, but as-is, this decreases our regression coverage significantly.

[HaoK]

Yeah I'm just skipping them in this PR for now so its easier for me to see what tests are failing that still need to be investigated.

[natemcmaster]

Oh, ok nvm. That's fine. We can fixup when this gets closer to merging.

[HaoK]

Yeah there are a lot of failures and this isn't even running the functional tests yet, the vast majority seem to be looking for a sln file at least, hopefully there can be a general fix for that pattern.

I'm just trying to do an initial pass to see what tests are fine, and I'll for now stop running them and just focus on the tests with issues first.

[HaoK]

Replaced by #6728