Add user_vault_load_balancer

Author: Henry Mollman

ansible/group_vars/alpha-shiva.yml

@@ -32,3 +32,5 @@ container_envs:
     value: "{{ shiva_rollbar_token }}"
   - name: DOCKER_PORT
     value: "{{ docker_port }}"
+  - name: USER_VAULT_LOAD_BALANCER
+    value: "{{ user_vault_load_balancer }}"