Adding ability to override moblab IPs

BUG=None
TEST=Ran script with overrides

Change-Id: I13c1ced389adb8a07c60fbcbba09183029aa3131
Reviewed-on: https://chromium-review.googlesource.com/468108
Commit-Ready: Tyler Reid <twreid@google.com>
Tested-by: Tyler Reid <twreid@google.com>
Reviewed-by: danny chan <dchan@chromium.org>
1 file changed