networkmanager: More robust detection of master while removing slaves
networkmanager: More robust detection of master while removing slaves

The UUID is just one way of linking a slave to its master.

Closes #5761
Reviewed-by: Dominik Perpeet <f7830b2723a5db4fc185058b06cfab4b89a38da9@redhat.com>

harishanand95/cockpit,petervo/cockpit,michalskrivanek/cockpit,harishanand95/cockpit,cockpituous/cockpit,mareklibra/cockpit,deryni/cockpit,larskarlitski/cockpit,Scribery/cockpit,SotolitoLabs/cockpit,deryni/cockpit,mareklibra/cockpit,stefwalter/cockpit,cockpituous/cockpit,harishanand95/cockpit,SotolitoLabs/cockpit,michalskrivanek/cockpit,dperpeet/cockpit,deryni/cockpit,dperpeet/cockpit,larskarlitski/cockpit,stefwalter/cockpit,larsu/cockpit,mvollmer/cockpit,andreasn/cockpit,larskarlitski/cockpit,garrett/cockpit,moraleslazaro/cockpit,Scribery/cockpit,petervo/cockpit,Scribery/cockpit,stefwalter/cockpit,dperpeet/cockpit,larskarlitski/cockpit,xhad/cockpit,petervo/cockpit,moraleslazaro/cockpit,larskarlitski/cockpit,xhad/cockpit,Scribery/cockpit,dperpeet/cockpit,dperpeet/cockpit,mareklibra/cockpit,cockpituous/cockpit,mareklibra/cockpit,larsu/cockpit,mvollmer/cockpit,SotolitoLabs/cockpit,larskarlitski/cockpit,cockpit-project/cockpit,cockpituous/cockpit,larsu/cockpit,cockpit-project/cockpit,SotolitoLabs/cockpit,xhad/cockpit,michalskrivanek/cockpit,petervo/cockpit,mvollmer/cockpit,garrett/cockpit,michalskrivanek/cockpit,dperpeet/cockpit,moraleslazaro/cockpit,stefwalter/cockpit,deryni/cockpit,petervo/cockpit,garrett/cockpit,andreasn/cockpit,andreasn/cockpit,moraleslazaro/cockpit,michalskrivanek/cockpit,larskarlitski/cockpit,xhad/cockpit,xhad/cockpit,Scribery/cockpit,garrett/cockpit,larsu/cockpit,SotolitoLabs/cockpit,harishanand95/cockpit,larsu/cockpit,deryni/cockpit,andreasn/cockpit,michalskrivanek/cockpit,martinpitt/cockpit,mareklibra/cockpit,andreasn/cockpit,Scribery/cockpit,moraleslazaro/cockpit,harishanand95/cockpit,cockpit-project/cockpit,deryni/cockpit,cockpituous/cockpit,andreasn/cockpit,mvollmer/cockpit,SotolitoLabs/cockpit,mvollmer/cockpit,harishanand95/cockpit,mareklibra/cockpit,SotolitoLabs/cockpit,martinpitt/cockpit,Scribery/cockpit,moraleslazaro/cockpit,martinpitt/cockpit,cockpit-project/cockpit,stefwalter/cockpit,dperpeet/cockpit,xhad/cockpit,stefwalter/cockpit,garrett/cockpit,michalskrivanek/cockpit,martinpitt/cockpit,xhad/cockpit,stefwalter/cockpit,harishanand95/cockpit,cockpit-project/cockpit,deryni/cockpit,cockpituous/cockpit,petervo/cockpit,moraleslazaro/cockpit,mareklibra/cockpit,larsu/cockpit,andreasn/cockpit,petervo/cockpit,martinpitt/cockpit