addmodule failing when the 'Store hostnames' argument is not entered.

This new argument was added to the addModule in 1.2. It's not validate that y/n is being entered causing misleading errors to be reported.

[root@ip-172-22-0-100 bin]# mcsadmin addModule pm3 172.22.7.106
addmodule Tue Dec 3 16:52:34 2019

Enter the 'User' Password or 'ssh' if configured with ssh-keys
Please enter: ssh

• • • • addModule Failed : Failed to Add Module, number of hostnames is less than Module Count