[move-function] Add tests for debug info for owned arguments.

Some notes:

1. I only updated the dwarf dump checks for the cases where the test case I was
   adding already had checks. The rest I am going to add the dwarf checks all at
   once in a subsequent commit.

2. In the dwarf checks that I wrote, there are a few issues that show up due to
   some LLVM fixes that I need to finish upstreaming. Once I upstream them, I will
   be able to enable the specific patterns I have disabled. This ensures I atleast
   will be able to tell if I am changing the current codegen.

3. This is dependent on the previous commit since one of the test cases hit the
   bug fixed by the previous commit.

Author: gottesmm