shared-defaults: add missing updog to list of network-affected services

[etungsten]

Issue number:

Resolves #3577

Description of changes:
For aws-* variants, we need to regenerate updog's config when the network proxy setting changes.

Testing done:
Before updating network.no-proxy setting

[root@admin]# sudo sheltie                                                                                                                                                                                        
bash-5.1# cat /etc/updog.toml 
metadata_base_url = "https://updates.bottlerocket.aws/2020-07-07/aws-k8s-1.28/x86_64/"
targets_base_url = "https://updates.bottlerocket.aws/targets/"
seed = 492
version_lock = "latest"
ignore_waves = true

After:

bash-5.1# apiclient set -j '{"settings": {"network":{"no-proxy": ["testing"]}}}' 
bash-5.1# cat /etc/updog.toml 
metadata_base_url = "https://updates.bottlerocket.aws/2020-07-07/aws-k8s-1.28/x86_64/"
targets_base_url = "https://updates.bottlerocket.aws/targets/"
seed = 492
version_lock = "latest"
ignore_waves = true
no_proxy=["testing"]

Migration tested:
On 1.16.0

bash-5.1# cat /var/lib/bottlerocket/datastore/current/live/settings/network.affected-services 
["containerd","kubernetes","host-containerd","host-containers"]

After upgrade to 1.16.1:

bash-5.1# cat /var/lib/bottlerocket/datastore/current/live/settings/network.affected-services 
["containerd","kubernetes","host-containerd","host-containers","updog"]

Terms of contribution:

By submitting this pull request, I agree that this contribution is dual-licensed under the terms of both the Apache License, version 2.0, and the MIT license.

[yeazelm]

LGTM!