[automerger skipped] Add some CTS tests for NetworkScore. am: b8c396b3b5 am: 35eddb4f18 -s ours

am skip reason: Merged-In I2edba51351cd4c71727663aa85b1d5141bff2a15 with SHA-1 2d2ecc3cfb is already in history

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1744647

Change-Id: I8c8a125c67e1a3c3f3acc2e959a3d0ba76b44bbb