adding INDEX permission to migrate user

playbooks/edx-east/create_dbs.yml

@@ -99,7 +99,7 @@
     - name: assign mysql user permissions for migrate user
       mysql_user:
         name: "{{ COMMON_MYSQL_MIGRATE_USER }}"
-        priv: "*.*:SELECT,INSERT,UPDATE,DELETE,ALTER,CREATE,DROP"
+        priv: "*.*:SELECT,INSERT,UPDATE,DELETE,ALTER,CREATE,DROP,INDEX"
         password: "{{ COMMON_MYSQL_MIGRATE_PASS }}"
         login_host: "{{ item.db_host }}"
         login_user: "{{ item.db_user }}"