vitrageclient is currently in the Recommends section of python3-heat. As vitrageclient is an optional dependency (you only need it if you have heat and vitrage), this is fairly reasonable and can be resolved by doing something like: sudo apt-get --install-suggests install python3-heat
vitrageclient is currently in the Recommends section of python3-heat. As vitrageclient is an optional dependency (you only need it if you have heat and vitrage), this is fairly reasonable and can be resolved by doing something like: sudo apt-get --install-suggests install python3-heat