In rare situations when libvirt crashes it restarts in new
container, but since mv was used originally
ca/key/cert are not in /tmp and this resulits in them
being absent by the final destination /etc/pki/libvirt-vnc.
Switching to cp solves the problem. Since /tmp is a local
for the pod volume there must be no concerns related to
keeping those files in that directory.
Change-Id: Idf3cc886b5b627e4a7c21e5158ccd2956efbd437
Signed-off-by: Alexey Odinokov <aodinokov@mirantis.com>