Release 18.5

This bug tracks cloud-init upstream release of version 18.5.

== Release Notes ==
Hello All,

Cloud-init release 18.5 is now available

The 18.5 release:
  * spanned just over two months in length.
  * had 13 contributors from 8 domains.
  * fixed 18 launchpad.net issues.

Highlights:
 - Azure now supports waking from preprovision state via netlink messages.
 - New cli command 'cloud-id' to display what cloud on which an instance
   is running.
 - write_files config module now supports appending to a file
 - instance-data.json standardized platform and subplatform values
 - select ubuntu archive mirror for armel, armhf, and arm64

== ChangeLog ==
 - tests: add Disco release [Joshua Powers]
 - net: render 'metric' values in per-subnet routes (LP: #1805871)
 - write_files: add support for appending to files. [James Baxter]
 - config: On ubuntu select cloud archive mirrors for armel, armhf, arm64.
   (LP: #1805854)
 - dhclient-hook: cleanups, tests and fix a bug on 'down' event.
 - NoCloud: Allow top level 'network' key in network-config. (LP: #1798117)
 - ovf: Fix ovf network config generation gateway/routes (LP: #1806103)
 - azure: detect vnet migration via netlink media change event
   [Tamilmani Manoharan]
 - Azure: fix copy/paste error in error handling when reading azure ovf.
   [Adam DePue]
 - tests: fix incorrect order of mocks in test_handle_zfs_root.
 - doc: Change dns_nameserver property to dns_nameservers. [Tomer Cohen]
 - OVF: identify label iso9660 filesystems with label 'OVF ENV'.
 - logs: collect-logs ignore instance-data-sensitive.json on non-root user
   (LP: #1805201)
 - net: Ephemeral*Network: add connectivity check via URL
 - azure: _poll_imds only retry on 404. Fail on Timeout (LP: #1803598)
 - resizefs: Prefix discovered devpath with '/dev/' when path does not
   exist [Igor Galić]
 - azure: retry imds polling on requests.Timeout (LP: LP:1800223)
 - azure: Accept variation in error msg from mount for ntfs volumes
   [Jason Zions] (LP: #1799338)
 - azure: fix regression introduced when persisting ephemeral dhcp lease
   [asakkurr]
 - azure: add udev rules to create cloud-init Gen2 disk name symlinks
   (LP: #1797480)
 - tests: ec2 mock missing httpretty user-data and instance-identity routes
 - azure: remove /etc/netplan/90-hotplug-azure.yaml when net from IMDS
 - azure: report ready to fabric after reprovision and reduce logging
   [asakkurr] (LP: #1799594)
 - query: better error when missing read permission on instance-data
 - instance-data: fallback to instance-data.json if sensitive is absent.
   (LP: #1798189)
 - docs: remove colon from network v1 config example. [Tomer Cohen]
 - Add cloud-id binary to packages for SUSE [Jason Zions]
 - systemd: On SUSE ensure cloud-init.service runs before wicked
   [Robert Schweikert] (LP: #1799709)
 - update detection of openSUSE variants [Robert Schweikert]
 - azure: Add apply_network_config option to disable network from IMDS
   (LP: #1798424)
 - Correct spelling in an error message (udevadm). [Katie McLaughlin]
 - tests: meta_data key changed to meta-data in ec2 instance-data.json
   (LP: #1797231)
 - tests: fix kvm integration test to assert flexible config-disk path
   (LP: #1797199)
 - tools: Add cloud-id command line utility
 - instance-data: Add standard keys platform and subplatform. Refactor ec2.
 - net: ignore nics that have "zero" mac address. (LP: #1796917)
 - tests: fix apt_configure_primary to be more flexible
 - Ubuntu: update sources.list to comment out deb-src entries. (LP: #74747)