Add Drush tasks

ansible/deploy/after-symlink-shared.yml

@@ -1,5 +1,3 @@
 ---
-- name: Install Composer dependencies
-  composer:
-    command: install
-    working_dir: '{{ ansistrano_release_path.stdout }}'
+- name: Run database updates
+  command: '{{ release_drush_path }} --root {{ release_web_path }} updatedb'

ansible/deploy/after-symlink.yml

@@ -0,0 +1,3 @@
+---
+- name: Clear Drupal cache
+  command: '{{ release_drush_path }} --root {{ release_web_path }} cache-rebuild'

ansible/deploy/after-update-code.yml

@@ -0,0 +1,5 @@
+---
+- name: Install Composer dependencies
+  composer:
+    command: install
+    working_dir: '{{ ansistrano_release_path.stdout }}'