replace newvalue with newproperty, ax debugging

* newvalue cannot be read from the system, newproperty can, use that
* remove debuggging statements
* align asignments to look pretty

p.s.:

    export GITLAB_API_ENDPOINT=https://gitlab.com/api/v3
    puppet resource gitlab_project

still tries to connect to the hard-coded value. This is bad and needs
fixing that goes beyond this commit.