kvm: direct download templates for system VM (#134) * kvm: direct download templates for system VM System VMs now support direct download templates. Different direct download timeouts have been made configurable with new global settings. Signed-off-by: Abhishek Kumar <abhishek.mrt22@gmail.com> * suggestion applied Co-authored-by: Andrija Panic <45762285+andrijapanicsb@users.noreply.github.com> Co-authored-by: Andrija Panic <45762285+andrijapanicsb@users.noreply.github.com>