Clean up bootstrap-osd key permissions

Don't create a cap without permissions, reassign
global root permissions to them and then hang on waiting
for permissions to be changed.
Merge pull request #25 from dirkmueller/release/roxy/master

[roxy] Clean up bootstrap-osd key permissions
Check if libvirt is available and started
Merge pull request #19 from mjura/release/roxy/libvirt-socket

[roxy] Check if libvirt is available and started