Skip License Validator entirely if run on a thirdparty package

[stefanhaerter]

Determined by Vendor tag in sopm file.

[stefanhaerter]

Feature needs further discussion. Pushed current approach to feature branch.

[stefanhaerter]

Abandoning the issue until a decision is reached how to proceed.

[stefanhaerter]

Came across this problem again yesterday - would've been nice to have this.