52f878a Switch to the libmodulemd v2 API

Authored and Committed by otaylor 4 years ago
    Switch to the libmodulemd v2 API
    
    As of module-build-service-2.21, module-build-service uses the v2
    API for libmodulemd, so we need to do the same, since we can't have
    two different API versions in the same process.
    
    Fixes #3