Update variable names

tools/ansible/vars/deploy_vars.yml

@@ -4,8 +4,8 @@ ansistrano_allow_anonymous_stats: false
 release_drupal_path: "{{ ansistrano_release_path.stdout }}/{{ project_web_root }}"
 release_drush_path: "{{ ansistrano_release_path.stdout }}/vendor/bin/drush"
 
-hash_salt: "{{ vault_hash_salt }}"
-install_drupal: true
+drupal_hash_salt: "{{ vault_drupal_hash_salt }}"
+drupal_install: true
 
 drupal_settings:
   - drupal_root: '{{ release_drupal_path }}'
@@ -20,7 +20,7 @@ drupal_settings:
                 database: '{{ database_name }}'
                 username: '{{ database_user }}'
                 password: '{{ database_password }}'
-          hash_salt: '{{ hash_salt }}'
+          hash_salt: '{{ drupal_hash_salt }}'
           config_directories:
             sync: ../config/sync
           trusted_hosts: