With BoltDB interface we are able to mock/stub and
improve test coverage.
Some other refactoring was required to make code aware
and compatible with the new interface
As part of the fix the model is slightly extended
to allow for an extra PlanStatus indicating the absence
of a plan for a project. This allows us to unlock a project
and delete the plan, without having to completely remove the
project status.
That means that atlantis knows there is a project that should
normally have a plan and be accounted for, but the plan has been
deleted/unlocked.
The reason this is important is so that we can't "trick" atlantis
into thinking that the PR can be merged just because we've lost
track of a projectstatus as a result of a manual unlock.
Split single top-level status check into one plan and one apply check.
These checks will also now track the whole pull request status rather
than just the last action.
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.
