assh for deploy user

[ivomarino]

the deploy user has assh as default ssh enabled, we need to:

% mkdir -p ~/tmp/.ssh/cm
% sudo su - ; cd /usr/local/bin ; ln -s /usr/local/go/bin/assh .

this must be handled in https://github.com/ttssdev/appflow/blob/master/playbooks/roles/common/tasks/assh.yml.