[FFE] netplan 0.34: new features

[Mathieu Trudel-Lapierre]

netplan 0.34 introduces new features:

 - optional: true on an interface to allow it to be "ignored" by networkd-wait-online at boot, and avoid 5 minute delays.
 - added 'help' subcommands everywhere.
 - added bash completion
 - 'netplan ip leases' now allows retrieving the lease file for the "private" DHCP settings contained in a lease for the backend in use. The lease file is displayed in full and allows retrieving settings not normally exposed by the backends.
 - implement better routing support: policy-based routing is now supported for the networkd backend, and better control over the "standard" routes to be installed. A new 'on-link: true' option allows for defining a route that is directly attached.

These stem from various requests we've had concerning the usability of netplan for various projects; for instance:

 - 'optional: true' is useful for the ubuntu-server daily image to avoid blocking in networkd while the network interface are coming up (which would block for 5 minutes waiting for timeout if no interface is connected).

 - policy routing, on-link: true and general routing improvements are common user requests from people migrating early to bionic.

 - help and bash completion are common requested features, and generally greatly improve usability.

This new release also has many long-term maintenance code cleanliness changes and fixes the following bugs:

    * Reinstate snap support for dealing with the NetworkManager snap.
       (LP: #1747714)
    * Don't silently break bridge-priority; fix it instead. (LP: #1752162)
    * Disable "ifupdown-migrate"; which is incomplete and thus risks breaking systems. Better iterate over it without showing it as a viable option.

[Mathieu Trudel-Lapierre (cyphermox)]

build logs:

[amd64] https://launchpadlibrarian.net/359874933/buildlog_ubuntu-bionic-amd64.netplan.io_0.34_BUILDING.txt.gz
[i386] https://launchpadlibrarian.net/359874911/buildlog_ubuntu-bionic-i386.netplan.io_0.34_BUILDING.txt.gz

install log:
root@giving-ghost:~# apt install nplan
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
  netplan.io
Suggested packages:
  network-manager | wpasupplicant
The following NEW packages will be installed:
  netplan.io
The following packages will be upgraded:
  nplan
1 upgraded, 1 newly installed, 0 to remove and 3 not upgraded.
Need to get 62.1 kB of archives.
After this operation, 70.7 kB of additional disk space will be used.
Do you want to continue? [Y/n]
Get:1 http://ppa.launchpad.net/cyphermox/netplan.io/ubuntu bionic/main amd64 nplan all 0.34 [7796 B]
Get:2 http://ppa.launchpad.net/cyphermox/netplan.io/ubuntu bionic/main amd64 netplan.io amd64 0.34 [54.3 kB]
Fetched 62.1 kB in 0s (146 kB/s)
(Reading database ... 27345 files and directories currently installed.)
Preparing to unpack .../archives/nplan_0.34_all.deb ...
Unpacking nplan (0.34) over (0.33) ...
dpkg: warning: unable to delete old directory '/etc/netplan': Directory not empty
Selecting previously unselected package netplan.io.
Preparing to unpack .../netplan.io_0.34_amd64.deb ...
Unpacking netplan.io (0.34) ...
Setting up netplan.io (0.34) ...
Setting up nplan (0.34) ...
Processing triggers for man-db (2.8.2-1) ...
root@giving-ghost:~#

[Łukasz Zemczak (sil2100)]

Those make sense, especially for such a flag product like netplan. Feature Freeze exception approved.

[Łukasz Zemczak (sil2100)]

I'll also use this bug to document the removal of the old nplan source package (since all of its binaries are now provided through netplan.io).

$ ./remove-package -m "Renamed to netplan.io" -s bionic nplan
Removing packages from bionic:
 nplan 0.33 in bionic
Comment: Renamed to netplan.io
Remove [y|N]? y
1 package successfully removed.

[Mathieu Trudel-Lapierre (cyphermox)]

This got landed, but the rename means the bug wasn't closed automatically. Closing:

netplan.io (0.34) bionic; urgency=medium

  * New release 0.34 (LP: #1754019):
    * Implement "optional: true" to correctly write systemd network definitions
      with "RequiredForOnline=false", so that these networks do not block boot.
      (LP: #1664844)
    * Implement 'help' as a subcommand of any netplan command, so that running
      'netplan * help' always returns some helpful information. (LP: #1748629)
    * Reinstate snap support for dealing with the NetworkManager snap.
      (LP: #1747714)
    * Added bash completion. (LP: #1749869)
    * Implement 'netplan ip leases': allows users to retrieve lease information
      for the backend in use; to query for custom DHCP options.
    * Don't silently break bridge-priority; fix it instead. (LP: #1752162)
    * Miscellaneous coverage, linting, and fuzzing fixes.
    * Refactor subcommands into separate source files, automate command loading
      and various code cleanups.
    * Disable "ifupdown-migrate"; which is incomplete and thus risks breaking
      systems. Better iterate over it without showing it as a viable option.
    * Add better routing support, implement initial routing policy support.
      - Add 'on-link' support. (LP: #1735193)
  * debian/control:
    - Renamed source and "real" binary to netplan.io.
    - Added a transitional package for nplan.
    - Updated Vcs-* fields to point to the Github project we now use.
    - Updated Standards-Version, debhelper.
  * debian/compat: bump to debhelper compat level 11.
  * debian/copyright: Update Format: field for https.
  * debian/netplan.io.install: obligatory file to install files.
  * debian/source/format: now we're 3.0 native, for reals.