[lldb][test] Add --sysroot argument to dotest.py#93885

dzhidzhoev wants to merge 0 commit intollvm:mainllvm/llvm-project:mainfrom

dzhidzhoev:lldb/dotest-arg-sysrootdzhidzhoev/llvm-project:lldb/dotest-arg-sysrootCopy head branch name to clipboard