[UBSan] Also use blacklist for 'Address; Undefined' setting

It looks like currently the UBSan blacklist is only applied when "Undefined" is selected.
This patch updates the cmake file to apply it whenever Undefined is selected
 (e.g. 'Address; Undefined' ). This  allows us to use the workaround added in
rL335525 when using AddressSan and UBSan together.

Reviewers: eugenis, vitalybuka

Reviewed By: eugenis

Differential Revision: https://reviews.llvm.org/D49558

llvm-svn: 337539