Remove trailing/leading whitespace on prompt for git remote to clone from (- nd maybe more generally in Configure()

[isc-tleavitt]

From customer call today

[isc-etamarch]

@isc-tleavitt Is this still an issue? I tried running through the Configure() method and see no leading / trailing whitespace

[isc-tleavitt]

@isc-etamarch this is if the user provides leading/trailing whitespace in their answer to a prompt.