Force the older API docs to be generated.

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@fosiki.com> (github: SvenDowideit)

(cherry picked from commit 41db1756268376465fd92038dfba1cca7f219595)
Merge pull request #5543 from SvenDowideit/docs-generate-all-api-docs-release

Force the older API docs to be generated.