GitLab

Fixes the command that changes Shared Runners timeout.

See merge request gitlab-com/migration!184

Add comms handler steps for youtube and status.io

See merge request gitlab-com/migration!190

Move T-0 to "Prevent updates to the primary"

Closes #743

See merge request gitlab-com/migration!186

Fix the criteria for an alert silence

See merge request gitlab-com/migration!183

Resolve "Add step to kill queue disabling loop after sidekiq is stopped"

Closes #752

See merge request gitlab-com/migration!189

Resolve "Update failover templates with proper script references"

Closes #756

See merge request gitlab-com/migration!188

fix list of domains for hostinfo

See merge request gitlab-com/migration!187

Address (some) feedback from 2018-08-02 failover attempt

Closes #753

See merge request gitlab-com/migration!176

bash3.2 compatibility for hostinfo

Closes #755

See merge request gitlab-com/migration!185

For the migration process we need to ensure, that during the switch
moment no job on Shared Runners will be running. The baclout window
was scheduled to take 1 hour, and this is the timeout that we want
to enforce on Runners.

While we need to update the general Shared Runners named
`shared-runners-manager-X.gitlab.com` - since the timeout is currently
set to 3 hours, we should not touch `gitlab-org` labelled Shared
Runners named `gitlab-shared-runners-manager-X.gitlab.com`.

`gitlab-org` runners already are configured with a 1 hour timeout
and this is the expected timeout for them.

Since it aligns with what we need for the migration, I've updated
the commands that are changeing the timeout. Now we're not touching
the `gitlab-org` runners at all, which means that:

- there is no change during the preparation step (`gitlab-org` runners
  during the migration will be set to 1h timeout),
- the reconfiguration step (or the failover step) will not change
  the expected timeout of `gitlab-org` runners, which should be left
  as 1h after the migration is ended.

test ssh on proper host in production

See merge request gitlab-com/migration!182

fix references to script location

See merge request gitlab-com/migration!181

Critical typo fix

See merge request gitlab-com/migration!180

Make remote rails runner commands work much better

See merge request gitlab-com/migration!179

Sidekiq Monitor Script, Mailroom Stop, Sidekiq Pullmirror Shutdown script

Closes #722

See merge request gitlab-com/migration!165

More symlink fixes

See merge request gitlab-com/migration!175

Harden the scripts against symlinks

See merge request gitlab-com/migration!174

Structure only

See merge request gitlab-com/migration!171

Revert "Merge branch 'database_wrangler_automation' into 'master'"

See merge request gitlab-com/migration!172

This reverts merge request !170

Database wrangler automation

See merge request gitlab-com/migration!170