Adding ability to set ssh args from config file

examples/ansible.cfg

@@ -66,3 +66,16 @@ remote_port=22
 
 #private_key_file=/path/to/file
 
+[paramiko_connection]
+
+# nothing to configure yet
+
+[ssh_connection]
+
+# if uncommented, sets the ansible ssh arguments to the following.  Leaving off ControlPersist
+# will result in poor performance, so use transport=paramiko on older platforms rather than
+# removing it
+
+ssh_args=-o ControlMaster=auto -o ControlPersist=60s -o ControlPath=/tmp/ansible-ssh-%h-%p-%r
+
+