* Add Ubuntu 20.04 to CI.
* Skip mqtt test on Ubuntu 20.04.
* Use explicit disable instead of aliases.
* Add Ubuntu 20.04 specific config for setup_postgresql_db.
* Fix postgres version.
* Run tests with macOS 10.15.
* Restrict to macOS CI runs for now until they pass.
* Skip tests on macOS that are skipped on OSX.
* Disable consul test for macOS.
* Disable chroot connection tests for macOS.
* Add setup_gnutar role from https://github.com/ansible/ansible/pull/71841.
* Use setup_gnutar for yarn and npm tests.
* Revert "Restrict to macOS CI runs for now until they pass."
This reverts commit d945d0399f.
* hashi_vault lookup tests seem to be always unstable, disabling for now.
* Use homebrew module instead of command.