It seems in some situations, or in some earlier version, using a `/`
to reference sls files in subdirectories did work. However, because
of the inconsistency it caused occasional confusion. This updates the
tutorial to focus on the canonical `.` notation, which always works.

Network state integration test test=True

Check that mysqladmin exists before running mysql integration tests

…ss (saltstack#34647)

* Better error handling for __virtual__ in dockerng module

* Modify lodaer global test to use populated dunders

This prevents a number of errors in the error log and makes for a
more robust test IMHO

* Lint saltstack#34644

Clarifies the proper way to reference states

This reverts commit f45dbe8.

Revert "Modify lodaer global test to use populated dunders"

No conflicts.