The default value set by the module was a value of None for the
config_file parameter, which propogates into the connect method
call overriding the stated default in the method.
Instead, the default should be set with-in the parameter
specification so the file check is not requested to check None.
Ports are integer values but the old code was assuming they were
strings. When login_port is put into playbook complex_args as an
integer the code would fail. This update should make the argument
validating make sure we have an integer and then we can send that value
directly to the relevant APIs.
Fixes#818
Julia Kreger
Sven Schliesing
Solomon Gifford
Toshio Kuratomi
Bruce Pennypacker
Petros Moisiadis
Andrew Shults
Michael DeHaan