Code review comment for ~chad.smith/cloud-init:ubuntu/bionic

I think what we need to do here is new-upstream-snapshot, as I think you did.
but that should result in a new debian/changelog entry.
It seems that you just removed the entry that got uploaded to -proposed.

I think it makes sense to have one like below..
The point of interest being that we mark bug 1780481 fixed.
I just ran 'new-upstream-snapshot' and edited.

cloud-init (18.3-9-g2e62cb8a-0ubuntu1~18.04.1) bionic-proposed; urgency=medium

  * New upstream snapshot.
    - docs: note in rtd about avoiding /tmp when writing files
    - ubuntu,centos,debian: get_linux_distro to align with platform.dist
      (LP: #1780481)
    - Fix boothook docs on environment variable name (INSTANCE_I ->
      INSTANCE_ID) [Marc Tamsky]
    - update_metadata: a datasource can support network re-config every boot
    - tests: drop salt-minion integration test
    - Retry on failed import of gpg receive keys.
    - tools: Fix run-container when neither source or binary package requested.
    - docs: Fix a small spelling error. [Oz N Tiram]
    - tox: use simplestreams from git repository rather than bzr.