Comment 9 for bug 1645644

I've uploaded a cloud-init test package to a ppa; you can test that this update fixes the ntp issue on an existing node.

On an affected node:

1. sudo add-apt-repository -y ppa:raharper/bugfixes
2. sudo apt update && sudo apt install cloud-init (#installs 0.7.9-6-gf5fdb6c-1~bddeb)
3. cat >user-data << EOF
#cloud-config

ntp:
  servers:
  - 17.16.18.19
  - 17.16.15.14
  pools:
  - 0.cloud-init.mypool
EOF
4. cloud-init --file user-data single --report --name ntp --frequency always
5. ntpq -p -w

You should see that ntp.conf has been updated with the supplied servers and pool, and that ntpq output shows those servers/pools.