Network adapters are not removed during catlet update

[ChristopherMann]

When a catlet is updated, network adapters which have been removed from the catlet configuration are not removed from the VM.

Steps

1. Create a new catlet with the following configuration:

   name: my-catlet
   parent: dbosoft/ubuntu-22.04/starter
   networks:
   - name: default
   

2. Update the catlet with the following configuration

   name: my-catlet
   parent: dbosoft/ubuntu-22.04/starter
   networks:
   - name: default
     mutation: remove
   

Expected result

The network adapter is removed as the network has been removed. The VM has no network adapters configured.

Actual result

The network adapter is still present in the VM.

AB#726