Merge "add new redirects for migration of sdk/ and tools/ docs to studio/...

Merge "add new redirects for migration of sdk/ and tools/ docs to studio/ bug:28447530" into mnc-mr-docs am: cf4fe3c4
am: 395e6865

* commit '395e6865':
  add new redirects for migration of sdk/ and tools/ docs to studio/ bug:28447530

Change-Id: Ia1619167356358262f96655d6dad1a8cda822bde