Build: Add option to restrict sanitization by owner

Add Make variable SANITIZE_NEVER_BY_OWNER to selectively
sanitize modules. By default, both are being sanitized. The
value of the variable is interpreted as a space or colon
separated list of owner names.

This can be used to create builds that lower the sanitization
burden by not sanitizing parts of the platform.

Bug: 29498013
Change-Id: Ib4412657fd38ff28a5c0863eddc2acde63c88ebb
(cherry picked from commit ea38d8e9)