* debian/update-grub-legacy-ec2: fix to include kernels whose config
    has CONFIG_XEN=y (LP: #1379080).
  * debian/patches/azure-use-walinux-agent.patch: continue relying on
    walinux agent in stable release.
  * New upstream release.
    - Fix config order of precedence, putting kernel command line over system.
      [Wesley Wiedenmeier] (LP: #1582323)
    - Update the list of valid ssh keys. [Michael Felt]
    - set_hostname: avoid erroneously appending domain to fqdn
      [Lars Kellogg-Stedman] (LP: #1647910)
    - Improve formatting for ProcessExecutionError [Wesley Wiedenmeier]
    - cloudinit/config/cc_rh_subscription.py: Remove repos before adding
      [Brent Baude]
    - main: set TZ in environment if not already set. [Ryan Harper]