[Bug 1970761] Update Released

[Brian Murray]

The verification of the Stable Release Update for ubuntu-release-
upgrader has completed successfully and the package is now being
released to -updates.  Subsequently, the Ubuntu Stable Release Updates
Team is being unsubscribed and will not receive messages about this bug
report.  In the event that you encounter a regression using the package
from -updates please report a new bug using ubuntu-bug and tag the bug
report regression-update so we can easily find any regressions.

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https://bugs.launchpad.net/bugs/1970761

Title:
  Upgrades to 22.04 can cause netplan failures on Raspi

Status in ubuntu-release-upgrader package in Ubuntu:
  Confirmed
Status in ubuntu-release-upgrader source package in Jammy:
  Fix Released

Bug description:
  [Impact]
      * In Jammy, Netplan commands fail if the following
        lines are present in the netplan config file:
        ```
        match:
           driver: bcmgenet smsc95xx lan78xx
        ```
      * Those lines are present in the default netplan config
        for Raspberry Pis in focal, hirsute, and impish
      * As a result, upgrades to jammy from older releases
        lead to netplan failures and broken networking

  [Test Plan]
      * Install impish on a Raspberry Pi
      * Upgrade to jammy using `do-release-upgrade -d`
      * Run `sudo netplan apply` and observe the command
        fails and the networking does not work
      * Reinstall impish on the Raspberry Pi
      * Upgrade to jammy using `do-release upgrade -d` with
        the proposed pocket enabled
      * Run `sudo netplan apply` and observe that the
        command succeeds and networking is functional

  [Regression Potential]
      * Since ubuntu-release-upgrader is modifying
        netplan's config, it is possible that custom
        configs could be impacted where not intended.

  [Original Description]
  The default netplan yaml configuration file on Raspi for older releases is

  ```
  network:
      ethernets:
          eth0:
              dhcp4: true
              match:
                  driver: bcmgenet smsc95xx lan78xx
              optional: true
              set-name: eth0
      version: 2
  ```

  In the version of netplan in jammy, the match section is no longer
  needed and causes netplan failures due to incompatible formatting. A
  quirk should be made to remove the match section.

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