Behavior driven infrastructure tests

[sebas5384]

This issue will contain all the user stories with the objective of developing the automated tests with Amulet.

• Download and get ready to continue the setup wizard of the Drupal. This is the default behavior.
• Automated install a new Drupal site. This happen when the install option (download-install) is checked.
  • Test administration credentials like: drupal-admin-username and drupal-admin-password.
  • Test if the administrator email match with the option drupal-admin-email.
• Check if the Drupal version is equal to drupal-version.
• Check if the install profile is equal to drupal-profile.
• Deal when enable/disable the Perusio's configuration for NGINX.
• Deal when removing and adding again the MySQL relation.
• Check the relation with the Varnish charm.
• Deploy an existing Drupal installation from a private repository where the deploy-key is needed.
  • Check if the Drupal is booting up after the database import.
  • Check if the Drupal is booting and ready to continue the profile installation, if the database is not specified.