Merge remote-tracking branch 'aosp/cldr-release-38' into aosp/upstream-release-cldr

Initialize the upstream-release-cldr branch to be aosp/cldr-release-38.
Later we can upgrade the CLDR to a later version.

Test: no diff for `git diff aosp/cldr-release-38`
Change-Id: I1bc747f53b44cb386c056106ccc2ddcd7df2398d