Handle "NetVirt installed indirectly by feature that depends on it" in puppet-opendaylight

There are various puppet-opendaylight config adjustments that check if odl-netvirt-openstack is a feature to be installed and only do some steps if it is. However, it's possible to install that feature by installing a feature that depends on it. Need to figure out how to handle this.

For example:

manifests/config.pp:142: if ('odl-netvirt-openstack' in $opendaylight::features or 'odl-netvirt-sfc' in $opendaylight::features) {

A simple/ugly solution would be to figure out which other projects we should check for (have Netvirt as dep) and add them to this check.

Imported from Trello