LoginTimeOut Defualt value not correct

[JyotikaGargg]

nit: there is a captial O in the flag --login-timeOut (this is a change from previous build)

Also with --login-timeout, we set the default to -1, but then say in the help 0 is infinite.  

the odbc default is 8 seconds.

Need to correct this as per ODBC.

[shueybubbles]

we can keep the 30 second default. 8 is way too short for Azure.
It's fine for the implementation to default to -1 as a sentinel for "not set by the user" we just shouldn't show it in the help.