[apis] add upcoming branches and drop old 5.x branches

(cherry picked from commit ef0bc698a42cfbe172bc8c990454b9ed9fe59770)
This commit is contained in:
spalger
2019-02-06 13:02:49 -06:00
parent fd4b0f7de7
commit b5986bef4f
21 changed files with 2930 additions and 63330 deletions

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