blt sync:refresh still prompts for confirmation when -y is supplied.

[thom8]

My system information:

• Operating system type: MacOS Sierra
• Operating system version: 10.12.5
• BLT version: 8.9.0-rc2

When I run this command:

blt sync:refresh -y

I get the following output:

> sync
> sync:db
> setup:settings
[Acquia\Blt\Robo\Tasks\DrushTask] Running /Users/thom/Projects/deloitte/toll-drupal/vendor/bin/drush cache-clear drush --uri=default && /Users/thom/Projects/deloitte/toll-drupal/vendor/bin/drush sql-drop --uri=default && /Users/thom/Projects/deloitte/toll-drupal/vendor/bin/drush sql-sync @toll.prod @toll.local --structure-tables-key=lightweight --create-db --sanitize --uri=default && /Users/thom/Projects/deloitte/toll-drupal/vendor/bin/drush cache-clear drush --uri=default in /Users/thom/Projects/deloitte/toll-drupal/docroot
'drush' cache was cleared.                                                                                                                                                                                                         [success]
Do you really want to drop all tables in the database drupal? (y/n):

And I expected this to happen:

Answer all confirmations with "yes" based on command docs

Usage:
  sync:refresh

Options:
  -h, --help            Display this help message
  -q, --quiet           Do not output any message
  -V, --version         Display this application version
      --ansi            Force ANSI output
      --no-ansi         Disable ANSI output
  -n, --no-interaction  Do not ask any interactive question
  -y, --yes             Answer all confirmations with "yes"
  -D, --define=DEFINE   Define a configuration item value. (multiple values allowed)
  -v|vv|vvv, --verbose  Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug

Help:
  Copies remote db to local db, re-imports config, and executes db updates.

[thom8]

Perhaps we could assume each task runs with ->option('yes') and have a single prompt for both
sql-drop & sql-sync which can be bypassed with -y

https://github.com/acquia/blt/blob/8.x/src/Robo/Commands/Sync/DbCommand.php#L62