Remove semester from image file

Author: ripleymj

packer/ubuntu-kvm.json

@@ -52,7 +52,7 @@
       "ssh_username": "{{user `ssh_user`}}",
       "ssh_password": "{{user `ssh_pass`}}",
       "ssh_timeout": "100m",
-      "vm_name": "image-{{user `semester` | lower }}.qcow2",
+      "vm_name": "image.qcow2",
       "net_device": "virtio-net",
       "disk_interface": "virtio",
       "boot_wait": "15s",