KVM: fix delete vm snapshot if it does not exist with a Stopped vm#11687

weizhouapache merged 2 commits intoapache:4.20apache/cloudstack:4.20from

weizhouapache:4.20-fix-kvm-delete-non-exist-vmsnapshotweizhouapache/cloudstack:4.20-fix-kvm-delete-non-exist-vmsnapshotCopy head branch name to clipboard