[SP28.2] Add shims to allow test utils built against different SDKs am: ccd68dc9c9 am: ec3c6f19f4 am: e7703a2249

Original change: https://android-review.googlesource.com/c/platform/frameworks/libs/net/+/1654918

Change-Id: I26a6487d96966efb0a55514376655c6007579d88
tree: 5edf2cc2d486222452143b7491fdbe9617231f19
  1. staticlibs/