Remove snapd from our servers

A long long time ago we globally removed snapd. Then we started to use
it to install kubectl so snapd was added back to things. Then we stopped
using kubectl snaps relying on openshift tooling instead. When we did
that we removed the removal of snapd. This means that new servers come
with snapd and don't get it removed.

In theory this is a safe change because nothing we deploy should be
relying on snaps. However, I'm not entirely sure how to audit that to be
100% sure. We should probably try to double check this a bit more before
deploying it.

Change-Id: I0441bda5beb018eb0a85dcdefa7f54c0c2d7ade4

playbooks/roles/base/server/tasks/Debian.yaml

@@ -46,6 +46,7 @@
       - lxd-client
       - cloud-init
       - open-vm-tools
+      - snapd
     state: absent
 
 - name: Get rid of extra depends