Enable tests am: b4204936d1 am: 34d32060ae am: 454ddcfa04 am: 974c30fbd9 am: 8a252f02e9

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/grpcio-compiler/+/1860668

Change-Id: I737646a850a4ef1381bdfbf8c11f4d2fc0c37c44