Merge "Have a collection of utilities for netd - NetdUtils" am: b062f94b3b am: 91664e9d5c am: 53e0e8a0a9

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I8dcfe75d525453bcda1d28d2184693d9089655b2