Comment 2 for bug 1864169

After installed `requests`, charm deploy still fail with with apt_key:

Failed to validate the SSL certificate for artifacts.elastic.co: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

It seems like this charm has never been deployed in trusty?