Fixes #4397 to place ci.blt.yml by default.

[mikemadison13]

Motivation
BLT ships with a ci.yml file (see https://github.com/acquia/blt/blob/main/scripts/blt/ci/internal/ci.yml) but it no longer places it as ci.blt.yml in the blt folder.

Proposed changes
Place the file during the scaffolding process.

Testing steps

1. Setup a new project using acquia/drupal-recommended-project
2. Add BLT
3. confirm that blt/ci.blt.yml is in place

[mikemadison13]

I'm getting a test failure here: https://github.com/acquia/blt/blob/main/tests/phpunit/src/DrupalSettingsTest.php#L41

$this->assertEquals($output_array['uri'], $drush_local_site_yml['options']['uri']);

This is failing with:

There was 1 failure:

1) Acquia\Blt\Tests\DrupalSettingsTest::testSetupDefaultLocalSettings
Failed asserting that two strings are equal.
--- Expected
+++ Actual
@@ @@
-'http://127.0.0.1:8080/'
+'http://127.0.0.1:8888/'

I think what's happening is that the ci.blt.yml file is resetting the value in the local.yml file (because we are in CI). I've updated the test to compare the local drush version output and the ci.blt.yml output to ensure they are the same. the drush status output is likely never going to show the 8888 port!

[mikemadison13]

FYI @danepowell i am experiencing test failures here and the values are flipped in PHP 7.4 and 8.0. i'm not sure what's going on, but i may need some help digging into it.

[pavlosdan]

This was what was missing to get our tests running in gitlab. +1 for creating the ci.blt.yml file during scaffolding. Or at the very list when the ci recipes or behat ini recipes runs.