tree 3489d5db0ac6c5a576a95aee440ac351e0d3d7a4
parent 165f2c79fc58934fb30eb4ec0307c780160f454e
author Arthur She <arthur.she@linaro.org> 1688749396 -0700
committer Arthur She <arthur.she@linaro.org> 1688749396 -0700

Ubuntu: Add docker-buildx-plugin package

mbed-tls-restricted-rp-ci-testing job error, due to
the lack of docker-buildx-plugin package [1]

[1]: https://ci.trustedfirmware.org/view/Mbed-TLS/job/mbed-tls-restricted-pr-ci-testing/view/change-requests/job/PR-758-merge/lastFailedBuild/console#:~:text=55%3A18%20%20%2B-,DOCKER_BUILDKIT%3D1%20docker%20build%20%2D%2Dbuild%2Darg%20BUILDKIT_INLINE_CACHE%3D1,-%2D%2Dbuild%2Darg%20ARMLMD_LICENSE_FILE

Signed-off-by: Arthur She <arthur.she@linaro.org>
Change-Id: Ia59b008ea0d2a3d24b32994069a6a46c2c7997a4