The NFVO should not allow deployments of network services with incompatible PoP types / VNFMs

[gc4rella]

The NFVO should not allow deployments of network services with incompatible PoP types / VNFMs.

There are cases in which the PoP types choose for deployment is incompatible with the VNFM choose by the VNF. Example: docker PoP type can't be used VNFs using the Generic VNFM.

A mechanism for not allowing the deployment in such conditions should be introduced.