The module requires that the account password is the same across all SLD

servers.

Added a command line script that allows the user to specify the current
account password for a server and change it to something else by sending
the EPP registry a newPW command on login.

Example usage: ./zacr-cli changepassword org.za <currentpass> <newpass>

Signed-off-by: Scott Barr <scott@barr.co.za>