(cherry picked from commit 0e1565c4)
Issue #3086644 by Mile23, alexpott, Mixologic, greg.1.anderson, jibran, catch: LegacyProject composer templates wrongly reference 8.x + fix test coverage
(cherry picked from commit f59792ea)
Issue #3031379 by heddn, Mile23, greg.1.anderson, Charlie ChX Negyesi, alexpott, Mixologic, jibran, catch, Lendude: Add a new test type to do real update testing
Issue #2982680 by greg.1.anderson, mbaynton, Mixologic, jibran, webflo, Mile23, phenaproxima, AaronMcHale, Charlie ChX Negyesi, nicksanta: Add composer-ready project templates to Drupal core
Issue #2983781 by Lendude: Update drupalci.yml concurrency comment to match the new reality of FunctionalJavascript
Issue #2942900 by Mixologic, vaplas, jibran, dawehner, Lendude, martin107, alexpott, tedbow, tacituseu, tstoeckler, heddn: Convert JavascriptTestBase Tests to use DrupalSelenium2Driver
Revert "Issue #2942900 by Mixologic, vaplas, jibran, Lendude, martin107, alexpott, dawehner, tedbow, tacituseu, tstoeckler, heddn: Convert JavascriptTestBase Tests to use DrupalSelenium2Driver" This reverts commit f55d9746.
Issue #2942900 by Mixologic, vaplas, jibran, Lendude, martin107, alexpott, dawehner, tedbow, tacituseu, tstoeckler, heddn: Convert JavascriptTestBase Tests to use DrupalSelenium2Driver