Gms playbook

[neoformit]

Add a playbook for deploying GMS to dev and prod servers:

ansible-playbook -i hosts --key-file ~/.ssh/galaxy-au gms_prod.yml

ansible-playbook -i hosts --key-file ~/.ssh/galaxy-au gms_dev.yml

This can't be run until a new GMS VM has been created in AARNet.

Introduces the following vars to the VAULT:

vault_gms_admin_email
vault_gms_admin_password
vault_gms_postgres_db_password
vault_gms_django_secret_key
vault_gms_smtp_password
vault_gms_slack_error_api_key
vault_gms_slack_api_urls  # comma-separated list
vault_gms_recaptcha_site_key
vault_gms_recaptcha_secret_key
vault_gms_galaxy_api_key
vault_gms_sentry_dns_url