[ASan] lit tests: create common autogenerated config for running compiler-rt lit tests, and use it in ASan

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183400 91177308-0d34-0410-b5e6-96231b3b80d8
[ASan] create common autogenerated config for running compiler-rt unit tests, and use it in ASan

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183401 91177308-0d34-0410-b5e6-96231b3b80d8