Update sanitizer bot configuration.

This commit brings sanitizer bot scripts in sync with the version that
currently runs on the bots.


git-svn-id: https://llvm.org/svn/llvm-project/zorg/trunk@219402 91177308-0d34-0410-b5e6-96231b3b80d8
Switch sanitizer bots to the scripts in zorg repo.


git-svn-id: https://llvm.org/svn/llvm-project/zorg/trunk@219403 91177308-0d34-0410-b5e6-96231b3b80d8