Merge "gdbclient.py: Fix gdb-remote command for non-local $ANDROID_SERIAL." am: 462ff76c54

Original change: https://android-review.googlesource.com/c/platform/development/+/2492895

Change-Id: Iac9d4a2dc57da94f69764e86f1a78ff8df6a842b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>