Revert of Dont build Ozone/LinuxOS compile bot with enable_package_mash_services=true (patchset #1 id:1 of https://codereview.chromium.org/2614713004/ )

Reason for revert:
Agreed with @thomasanderson that past [1] we should continue to build ozone/linux with
enable_package_mash_services=true now that --window-manager=simple_vm can be used.

[1] https://codereview.chromium.org/2620503002/

Original issue's description:
> Dont build Ozone/LinuxOS compile bot with enable_package_mash_services=true
>
> This should bring the Ozone/LinuxOS builds back building (not running).
>
> Review-Url: https://codereview.chromium.org/2614713004
> Cr-Commit-Position: refs/heads/master@{#441744}
> Committed: https://chromium.googlesource.com/chromium/src/+/b69a8c43e07497ebd2d6603bbda27ed36a1cc541

TBR=thomasanderson@google.com,dpranke@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.

Review-Url: https://codereview.chromium.org/2627433002
Cr-Commit-Position: refs/heads/master@{#442377}
1 file changed