guestfs: restrict container security context
guestfs: restrict container security context

Drop all the capabilities, set allowPrivilegeEscalation to false and
seccompProfile type to RuntimeDefault.

Signed-off-by: Alice Frosi <93920af21f2e5725c81babb78c15f887c6026b77@redhat.com>

kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt