Can't set username to establish ssh connection.

Hey, all.

Recently, I’ve updated my role to use Ansible 2.0. After that I failed to use ssh connection, I could only apply my role using ansible_connection=ssh.

I’ve created a github issue with description of this problem: https://github.com/ansible/ansible/issues/15139

Do you have any idea of how to debug/solve this problem?

Thank you.