Merge "Throw an error if a shell command results in an error." am: 90a74273e7

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2064787

Change-Id: I0ea6c58e8f48f32ccbcf42c2c07f42c66c453c86
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>