Merge "Throw an error if a shell command results in an error." am: 90a74273e7 am: dccd4d04ad

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

Change-Id: I3aa5b544baaad454ee34c3f28cfc88a24abdef65
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>