cloud-init 18.3

- release 18.3 (LP: #1777743)
- docs: represent sudo:false in docs for user_groups config module
- Explicitly prevent `sudo` access for user module
  [Jacob Bednarz] (LP: #1771468)
- lxd: Delete default network and detach device if lxd-init created them.
  (LP: #1776958)
- openstack: avoid unneeded metadata probe on non-openstack platforms
  (LP: #1776701)
- stages: fix tracebacks if a module stage is undefined or empty
  [Robert Schweikert] (LP: #1770462)
- Be more safe on string/bytes when writing multipart user-data to disk.
  (LP: #1768600)
- Fix get_proc_env for pids that have non-utf8 content in environment.
  (LP: #1775371)
- tests: fix salt_minion integration test on bionic and later
- tests: provide human-readable integration test summary when --verbose
- tests: skip chrony integration tests on lxd running artful or older
- test: add optional --preserve-instance arg to integraiton tests
- netplan: fix mtu if provided by network config for all rendered types
  (LP: #1774666)
- tests: remove pip install workarounds for pylxd, take upstream fix.
- subp: support combine_capture argument.
- tests: ordered tox dependencies for pylxd install
- util: add get_linux_distro function to replace platform.dist
  [Robert Schweikert] (LP: #1745235)
- pyflakes: fix unused variable references identified by pyflakes 2.0.0.
- - Do not use the systemd_prefix macro, not available in this environment
  [Robert Schweikert]
- doc: Add config info to ec2, openstack and cloudstack datasource docs
- Enable SmartOS network metadata to work with netplan via per-subnet
  routes [Dan McDonald] (LP: #1763512)
- openstack: Allow discovery in init-local using dhclient in a sandbox.
  (LP: #1749717)
- tests: Avoid using https in httpretty, improve HttPretty test case.
  (LP: #1771659)
- yaml_load/schema: Add invalid line and column nums to error message
- Azure: Ignore NTFS mount errors when checking ephemeral drive
  [Paul Meyer]
- packages/brpm: Get proper dependencies for cmdline distro.
- packages: Make rpm spec files patch in package version like in debs.
- tools/run-container: replace tools/run-centos with more generic.
- Update version.version_string to contain packaged version. (LP: #1770712)
- cc_mounts: Do not add devices to fstab that are already present.
  [Lars Kellogg-Stedman]
- ds-identify: ensure that we have certain tokens in PATH. (LP: #1771382)
- tests: enable Ubuntu Cosmic in integration tests [Joshua Powers]
- read_file_or_url: move to url_helper, fix bug in its FileResponse.
- cloud_tests: help pylint
- flake8: fix flake8 errors in previous commit.
- typos: Fix spelling mistakes in cc_mounts.py log messages [Stephen Ford]
- tests: restructure SSH and initial connections [Joshua Powers]
- ds-identify: recognize container-other as a container, test SmartOS.
- cloud-config.service: run After snap.seeded.service. (LP: #1767131)
- tests: do not rely on host /proc/cmdline in test_net.py
  [Lars Kellogg-Stedman] (LP: #1769952)
- ds-identify: Remove dupe call to is_ds_enabled, improve debug message.
- SmartOS: fix get_interfaces for nics that do not have addr_assign_type.
- tests: fix package and ca_cert cloud_tests on bionic (LP: #1769985)
- ds-identify: make shellcheck 0.4.6 happy with ds-identify.
- pycodestyle: Fix deprecated string literals, move away from flake8.
- azure: Add reported ready marker file. [Joshua Chan] (LP: #1765214)
- tools: Support adding a release suffix through packages/bddeb.
- FreeBSD: Invoke growfs on ufs filesystems such that it does not prompt.
  [Harm Weites] (LP: #1404745)
- tools: Re-use the orig tarball in packages/bddeb if it is around.
- netinfo: fix netdev_pformat when a nic does not have an address
  assigned. (LP: #1766302)
- collect-logs: add -v flag, write to stderr, limit journal to single
  boot. (LP: #1766335)
- IBMCloud: Disable config-drive and nocloud only if IBMCloud is enabled.
  (LP: #1766401)
- Add reporting events and log_time around early source of blocking time
- IBMCloud: recognize provisioning environment during debug boots.
  (LP: #1767166)
- net: detect unstable network names and trigger a settle if needed
  (LP: #1766287)
- IBMCloud: improve documentation in datasource.
- sysconfig: dhcp6 subnet type should not imply dhcpv4 [Vitaly Kuznetsov]
- packages/debian/control.in: add missing dependency on iproute2.
  (LP: #1766711)
- DataSourceSmartOS: add locking of serial device.
  [Mike Gerdts] (LP: #1746605)
- DataSourceSmartOS: sdc:hostname is ignored [Mike Gerdts] (LP: #1765085)
- DataSourceSmartOS: list() should always return a list
  [Mike Gerdts] (LP: #1763480)
- schema: in validation, raise ImportError if strict but no jsonschema.
- set_passwords: Add newline to end of sshd config, only restart if
  updated. (LP: #1677205)
- pylint: pay attention to unused variable warnings.
- doc: Add documentation for AliYun datasource. [Junjie Wang]
- Schema: do not warn on duplicate items in commands. (LP: #1764264)
- net: Depend on iproute2's ip instead of net-tools ifconfig or route
- DataSourceSmartOS: fix hang when metadata service is down
  [Mike Gerdts] (LP: #1667735)
- DataSourceSmartOS: change default fs on ephemeral disk from ext3 to
  ext4. [Mike Gerdts] (LP: #1763511)
- pycodestyle: Fix invalid escape sequences in string literals.
- Implement bash completion script for cloud-init command line
- tools: Fix make-tarball cli tool usage for development
- renderer: support unicode in render_from_file.
- Implement ntp client spec with auto support for distro selection
  (LP: #1749722)
- Apport: add Brightbox, IBM, LXD, and OpenTelekomCloud to list of clouds.
- tests: fix ec2 integration network metadata validation
- tests: fix integration tests to support lxd 3.0 release
- correct documentation to match correct attribute name usage.
  [Dominic Schlegel] (LP: #1420018)
- cc_resizefs, util: handle no /dev/zfs
- doc: Fix links in OpenStack datasource documentation.
  [Dominic Schlegel] (LP: #1721660)