Features:
- remote plans and applies will set a commit status with a link to the
Terraform Enterpise UI where the streaming output can be viewed.
- because remote plans don't support the -out flag, we diff the plan
output between plan and apply phases to ensure users are applying the
plan they expected
How:
We add a new capability to execute a terraform command while
concurrently reading its real-time output and performing actions
accordingly.
Automerging merges pull requests automatically if all plans have been
successfully applied.
* Save status of PR's to BoltDB so after each apply, we can check if
there are pending plans.
* Add new feature where we delete successful plans *unless* all plans
have succeeded *if* automerge is enabled. This was requested by users
because when automerge is enabled, they want to enforce that a pull
request's changes have been fully applied. They asked that plans not be
allowed to be applied "piecemeal" and instead, all plans must be
generated successfully prior to allowing any plans to be applied.
On startup, make a call to the /version endpoint of Gitlab to get which
version we're running. Then use that version to determine whether we
should use the markdown folding syntax where the code is expandable.
Versions of Gitlab < 11.1 don't support the "Common Mark" markdown
format.
Fixes https://github.com/runatlantis/atlantis/issues/315
