make the run_migration flags more prompt friendly

playbooks/edx-west/edxapp_prod.yml

 # this gets all running prod webservers
 #- hosts: tag_environment_prod:&tag_function_webserver
 # or we can get subsets of them by name
-- hosts: ~tag_Name_app(4)_prod
+- hosts: ~tag_Name_app(11|21)_prod
 #- hosts: ~tag_Name_app(11|21)_prod
 ## these are cold hosts:
 #- hosts: ~tag_Name_app(12|22)_prod
@@ -10,6 +10,15 @@
 ## you can also do security group, but don't do that
 #- hosts: security_group_edx-prod-EdxappServerSecurityGroup-NSKCQTMZIPQB
   sudo: True
+  vars_prompt:
+    - name: "lms_version"
+      prompt: "Enter the edx-platform version: branch, hash, tag, or 'HEAD' (default is edx-west/release)"
+      default: "edx-west/release"
+      private: no
+    - name: "migrate_db"
+      prompt: "Should this playbook run database migrations? (Default is False)"
+      default: false
+      private: no
   vars:
     secure_dir: '../../../configuration-secure/ansible'
     # this indicates the path to site-specific (with precedence)

playbooks/edx-west/ora_prod.yml

 # this gets all running prod webservers
-- hosts: tag_environment_prod:&tag_function_ora
+#- hosts: tag_environment_prod:&tag_function_ora
 # or we can get subsets of them by name
-#- hosts: ~tag_Name_xserver(1|2)_prod
+- hosts: ~tag_Name_ora(10|11)_prod
 #- hosts: security_group_edx-prod-EdxappServerSecurityGroup-NSKCQTMZIPQB
   sudo: True
   vars:

playbooks/roles/edxapp/tasks/deploy.yml

@@ -261,7 +261,7 @@
 
 - name: syncdb and migrate
   shell: sudo -u www-data SERVICE_VARIANT=lms /opt/edx/bin/django-admin.py syncdb --migrate --noinput --settings=lms.envs.aws --pythonpath=/opt/wwc/edx-platform
-  when: migrate_db is defined
+  when: migrate_db
   tags:
   - deploy
   - lms

playbooks/roles/ora/tasks/deploy.yml

@@ -93,7 +93,7 @@
 
 - name: syncdb and migrate
   shell: sudo -u www-data {{venv_dir}}/bin/django-admin.py syncdb --migrate --noinput --settings=edx_ora.aws --pythonpath={{ora_code_dir}}
-  when: migrate_db is defined
+  when: migrate_db
   tags:
   - ora
   - syncdb

playbooks/roles/xqueue/tasks/deploy.yml

@@ -47,7 +47,7 @@
 
 - name: syncdb and migrate
   shell: sudo -u www-data /opt/edx/bin/django-admin.py syncdb --migrate --noinput --settings=xqueue.aws_settings --pythonpath=/opt/wwc/xqueue
-  when: migrate_db is defined
+  when: migrate_db
   tags:
   - xqueue
   - syncdb