storaged: Ignore block devices with size zero
storaged: Ignore block devices with size zero

This removes the inactive loopback devices on Ubuntu.

Closes #5564
Reviewed-by: Peter <a316049dd34607c62d4611d63ab22a6454add223@redhat.com>

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