please_cli: pass USE_NIX to `please`

In order to generate the base image we need to manually edit the
`please` file and toggle the `USE_NIX` variable. This patch will
simplify the process.

docs: Remove IRC notification (mozilla#1646)

codecoverage/bot: Update ActiveData query URL (mozilla#1644)

codecoverage/bot: Don't pass the prefix option to grcov, as the prefi…

…x is already removed on test machines (mozilla#1575)

please_cli: another fix for deploy:S3 (mozilla#1552)

staticanalysis/bot: Add InferIssue to revision/base.py, and remove op…

…tion from android config. (mozilla#1503)

setup: Update uplift/frontend DNS (mozilla#1424)

See https://github.com/mozilla-releng/build-cloud-tools/pull/353/files

shipit-workflow: removing deployment to heroku and commenting out dep…

…loyment to cloudops (mozilla#1333)

we are commenting the deployment out because currently we don't support pushing
multi layer docker images.

shipit_static_analysis: Dump analyzers raw outputs as Taskcluster art…

…ifacts for debugging. mozilla#1257

shipit-static-analysis: Enhance issue body parser, fixes mozilla#1251, …

…mozilla#1254