Merge "Have a collection of utilities for netd - NetdUtils" am: b062f94b3b am: 91664e9d5c

Original change: https://android-review.googlesource.com/c/platform/frameworks/libs/net/+/1535641

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I2a5cb48fca7e0a27f7e2aa17b84c42ae8e917c8b