Bug 1508383 - pass TASKCLUSTER_{ROOT,PROXY}_URL to tasks

[djmitche]

Per taskcluster/taskcluster-rfcs#128

[walac]

It feels like there is a regression

[djmitche]

Looking now..

[djmitche]

Ah, I think it's because taskcluster/taskcluster-proxy#38 hasn't landed yet, so when it starts taskcluster-proxy, the proxy bails because it doesn't understand --root-url. Let's wait until that PR lands.

[djmitche]

OK, upgraded to the just-released 5.0.0 from taskcluster/taskcluster-proxy#38. Let's see what the tests do..

[djmitche]

OK that's probably my fault:

    1) issue a request to taskcluster via the proxy
  29 passing (9m)
  1 failing
  1) taskcluster proxy issue a request to taskcluster via the proxy:
     AssertionError [ERR_ASSERTION]: custom artifact is available
      at Context.test (test/integration/taskcluster_proxy_test.js:45:12)
      at <anonymous>
      at process._tickCallback (internal/process/next_tick.js:188:7)

[djmitche]

OK, relatively simple fix, but please let me know if you agree with the plan in https://bugzilla.mozilla.org/show_bug.cgi?id=1508383#c2 that it represents.