Ansible: speed-up the connection by fine-tuning ansible.cfg

Author: arm4b

operations/deployment/ansible/ansible.cfg

@@ -6,4 +6,6 @@ host_key_checking = False
 transport = ssh
 
 [ssh_connection]
-ssh_args = -o ForwardAgent=yes
+# speed-up the connection by using pipelining, ControlPersist and ControlMaster
+pipelining = True
+ssh_args = -o ForwardAgent=yes -o ControlMaster=auto -o ControlPersist=600s