Add in google_sdk.py module

google_sdk is a class that will automatically d/l the google sdk if it's not
readily available on the host and provide the path to it, otherwise it will
find the existing installed path for it.

Bug: 110856450
Test: patch aosp/712746
m acloud && acloud setup --gcp_init
Change-Id: I845dddbfa93b0f86683db674310a715f57302f4f
2 files changed