Add another patch to Ceph 0.87 to fix deadlock on exit

Ceph 0.87 as of my last PR has a bug where the `ceph` tool hangs on exit, because it's relying on the Python interpreter doing some GC that it's not required to do. This results in librados.so blocking the shutdown of the python interpreter.

The fix for that isn't submitted to ceph master yet, but the patch in the PR definitely fixes the issue, so I grabbed it ahead of time.