Merge pull request #588 from tomasbedrich/sudo-ssh-agent-forwarding

Allow SSH agent forwarding when using sudo.  This allows one to use SSH agent forwarding from a local machine when logged in as a root on the Sovereign server.  This is useful, for example, for cloning a Github repository to /var/www (owned by root) without the need to store private SSH keys on the Sovereign server.

roles/common/templates/sudoers.j2

 {{ main_user_name }} ALL=(ALL) NOPASSWD: ALL
+
+# Allow SSH agent forwarding when using sudo
+Defaults    env_keep+=SSH_AUTH_SOCK