am 37ca5d1: am 19a4bd1: AI 147710: Add redirects for sdk/preview pages.

Merge commit '37ca5d11b32399b2924f56e5d8e6dc414f8d1018'

* commit '37ca5d11b32399b2924f56e5d8e6dc414f8d1018':
  AI 147710: Add redirects for sdk/preview pages.