Virtual PC Descriptor

See merge request !118

(cherry picked from commit 74517831)

93f1539f Virtual PC Descriptor
a3376cdc Update hackfest_virtual-pc_vnfd/virtual-pc_vnfd.yaml
15bccf2b Deleted hackfest_virtual-pc_vnfd/charms/virtual-pc/hooks/install,...
5074ce34 Adding built charm
4e56134b Virtual PC NS Descriptor
a7fcf52d Fix no indicators on virtual-pc charm
a819702e Merge branch 'fix-virtual-pc-no-indicators' into 'beierlm-virtual-pc'