Move to use the new role ec2 tag.

playbooks/edx-east/edx_vpc.yml

 ---
-- hosts: first_in_tag_group_edxapp
+- hosts: first_in_tag_role_edxapp
   sudo: True
   serial: 1
   vars_files:
@@ -16,9 +16,8 @@
       - lms-preview
     - role: 'edxapp'
       edxapp_lms_env: 'lms.envs.load_test'
-      edx_platform_commit: 'release'
     - splunkforwarder
-- hosts: tag_group_edxapp:!first_in_tag_group_edxapp
+- hosts: tag_role_edxapp:!first_in_tag_role_edxapp
   sudo: True
   serial: 1
   vars_files:
@@ -35,9 +34,8 @@
       - lms-preview
     - role: 'edxapp'
       edxapp_lms_env: 'lms.envs.load_test'
-      edx_platform_commit: 'release'
     - splunkforwarder
-- hosts: tag_group_worker
+- hosts: tag_role_worker
   sudo: True
   vars_files:
     - "{{ secure_dir }}/vars/dev/{{CLOUDFORMATION_STACK_NAME}}.yml"
@@ -56,7 +54,7 @@
       celery_worker: True
       edx_platform_commit: 'release'
     - splunkforwarder
-- hosts: tag_group_xserver
+- hosts: tag_role_xserver
   sudo: True
   vars_files:
     - "{{ secure_dir }}/vars/dev/{{CLOUDFORMATION_STACK_NAME}}.yml"
@@ -69,7 +67,7 @@
       - xserver
     - xserver
     - splunkforwarder
-- hosts: tag_group_rabbitmq
+- hosts: tag_role_rabbitmq
   serial: 1
   sudo: True
   vars_files:
@@ -80,7 +78,7 @@
     - common
     - rabbitmq
     - splunkforwarder
-- hosts: first_in_tag_group_xqueue
+- hosts: first_in_tag_role_xqueue
   sudo: True
   vars_files:
     - "{{ secure_dir }}/vars/dev/{{CLOUDFORMATION_STACK_NAME}}.yml"
@@ -93,7 +91,7 @@
       - xqueue
     - xqueue
     - splunkforwarder
-- hosts: tag_group_xqueue:!first_in_tag_group_xqueue
+- hosts: tag_role_xqueue:!first_in_tag_role_xqueue
   sudo: True
   vars_files:
     - "{{ secure_dir }}/vars/dev/{{CLOUDFORMATION_STACK_NAME}}.yml"
@@ -106,7 +104,7 @@
       - xqueue
     - xqueue
     - splunkforwarder
-- hosts: tag_group_forum[0]
+- hosts: tag_role_forum
   sudo: True
   vars_files:
     - "{{ secure_dir }}/vars/dev/{{CLOUDFORMATION_STACK_NAME}}.yml"