Workaround GoogleCloudPlatform/guest-agent#401

Fix the versions for local google guest VM services so that they do not
upgrade to versions that are known to have boot-time issues for the
following combination:

- building image using Packer on a build VM without local NVME devices
- final image used on a VM with local NVME devices

In this combination, network configurations persist that do not match
the final naming conventions of the network interfaces because of
differing PCI bus layout.

examples/machine-learning/a3-megagpu-8g/slurm-a3mega-image.yaml

@@ -57,13 +57,17 @@ deployment_groups:
       # if you follow this rule, any module which supports DKMS will be
       # properly configured at the end of image building (gVNIC, NVIDIA, ...)
       - type: shell
-        destination: disable_unattended_upgrades.sh
+        destination: prevent_unintentional_upgrades.sh
         content: |
           #!/bin/bash
           set -e -o pipefail
           systemctl stop unattended-upgrades.service
           systemctl disable unattended-upgrades.service
           systemctl mask unattended-upgrades.service
+          apt-mark hold google-compute-engine
+          apt-mark hold google-compute-engine-oslogin
+          apt-mark hold google-guest-agent
+          apt-mark hold google-osconfig-agent
       - type: ansible-local
         destination: install_headers_archive.yml
         content: |