This solves the problem for installations failing with this message:
"msg: Failed to validate the SSL certificate for download.elasticsearch.org:443. Use validate_certs=no or make sure your managed systems have a valid CA certificate installed. Paths checked for this platform: /etc/ssl/certs, /etc/pki/ca-trust/extracted/pem, /etc/pki/tls/certs, /usr/share/ca-certificates/cacert.org, /etc/ansible"

https://github.com/edx/edx-platform/pull/6576

In the case of ecomstack, the edx_ecommerce home directory was owned by root instead of the edx_ecommerce user.

Added short name in generic_env_config

Added short name var for studio, this helps to redefined from servers-vars.yml

Make sure the local databases get created for the ecommerce app
and update some other databases that should be wired back to the
settings in their corresponding roles.

Mostly from wiring issues I discovered while testing this vagrant
image.