mm (Myanmar / Burmese) for zawgyi keyboard layout

Thanks for your report and your patch!

However, this is too late for Ubuntu 18.04, which will be released in a few days. Many users change xkb-data files to set up personal keyboard configuration, and we don't do stable release updates of this package unless absolutely necessary, since it would overwrite such changes.

I see that it was included upstream, so the new Burmese layout variant will most likely be included in Ubuntu 18.10.

Done
https://bazaar.launchpad.net/~alexeyten/xkeyboard-config/master/revision/1961

Not sure what you consider was done. That repository imports automatically from the upstream one. What I said, i.e. that it will be included in the xkb-data package only in 18.10, still stands.

https://bugs.freedesktop.org/show_bug.cgi?id=106169 is done

all of CentOS, Fedora, Arch, Debian is include

but still not include in 19.04

This bug was fixed in the package xkeyboard-config - 2.26-2ubuntu1

---------------
xkeyboard-config (2.26-2ubuntu1) eoan; urgency=medium

  * Merge with Debian (LP: #1766063, LP: #1825786), remaining changes:
    - control, rules, xkb-data-i18n.install, xkb-data.install: Split out
      xkb-data-i18n to be used by console-setup.
    - xkb-data.postinst: Remove the xkb cache to make sure it gets
      regenerated.
  * Dropped patch, applied upstream:
    - debian/patches/git_airplane_key.patch

xkeyboard-config (2.26-2) unstable; urgency=medium

  * Revert following commits:
    - ed67b29e (Map evdev keycode KEY_BRIGHTNESS_CYCLE to
      XF86MonBrightnessCycle)
    - d0e5e63c (Map evdev keycode KEY_KEYBOARD to XF86Keyboard)
    - e6103610 (Map evdev keycode KEY_FAVORITES to XF86Favorites)
    (Closes: #921867, #921940, #922020).

xkeyboard-config (2.26-1) unstable; urgency=medium

  * New upstream release.
    - Map evdev keycodes KEY_RFKILL and KEY_WWAN to XF86RFKill and
      XF86WWAN (Closes: #917157).
    - allowMultipleSelection is wrong in korean data (Closes: #902234).
  * Drop fix-typo.diff, upstreamed.
  * Cherry-pick af6c0f29 (Fixed broken pt layout) from upstream.
  * Let uscan check upstream tarball signatures.
  * Update Vcs-* URLs to point to salsa.debian.org.
  * Bump debhelper compat to 10.
  * Raise Priority to optional.
  * Set source format to 1.0.
  * Bump standards version to 4.3.0.

 -- Gunnar Hjalmarsson <email address hidden> Mon, 22 Apr 2019 08:08:00 +0200