Update deployment commands to use new Drush 10 recommendations

[ElijahLynn]

Update deployment commands to use new Drush 10 recommendations. We are still on Drush 8 because CI is stuck there until we do something about it. New recommendations in drush-ops/drush#4359 are:

drush updatedb --no-cache-clear # Runs updates and post-updates
drush cache:rebuild
drush config:import
drush cache:rebuild

Our current steps are:

drush status # This populates opcache and takes a long time
drush cache:rebuild
drush updatedb # Runs updates and post-updates
drush config:import
drush cache:rebuild

Need to test this a bunch and I think this might make deploys a bit faster since the updatedb has a --no-cache-clear flag.

[ElijahLynn]

Related #1230.

[ElijahLynn]

And if we end up on Drush 10 by the time we get to this, update commands to just be drush deploy.

[ElijahLynn]

And if we end up on Drush 10 by the time we get to this, update commands to just be drush deploy.

We will be getting to Drush so we should do this instead.

[ElijahLynn]

Done in PR #4378 as part of story #3904.