Bug 1748036

Description of problem:

When running hosted-engine deployment on a remote host using 
hosted-engine ansible role directly, the deployment time can be significantly reduced when adding the following lines to /etc/ansible/ansible.cfg under [ssh] section:

ssh_args = -C -o ControlMaster=auto -o ControlPersist=30m
control_path_dir = /root/cp
control_path = %(directory)s/%%h-%%r
pipelining = True

In every task in ansible on a remote host a new ssh connection is 
being established. because we have numerous tasks on the hosted-engine Ansible role we create many ssh connections.
Adding these 4 lines in ansbile.cfg configuration file will ensure opening  only one ssh connection to the remote host, thus reducing the time of open and close ssh connection every single task.

These lines should be added to /etc/ansible/ansible.cfg when installing the hosted-engine package.

Steps to verfiy:
1. Deploy hosted-engine on a local host 
2. Deploy hosted-engine on a remote host
(it doesn't matter if it's command-line or with cockpit)