tree bcfc828e34e44198e6af13f204163c08acc5ed3f
parent 376e728d96efee0251a9979306cc371ff6cb4600
author Tuo Shan <shantuo@google.com> 1507228211 -0700
committer Tuo Shan <shantuo@google.com> 1507666275 +0000

all: add basic trace to gddo

This uses Stackdriver trace API to trace search, package requests
as well as background tasks. It also traces outbound requests to
VCS's and remote_api calls.

Change-Id: Ice82c1fbd267eefa4bad9d6674dc39ef10a1c874
Reviewed-on: https://go-review.googlesource.com/68472
Reviewed-by: Ross Light <light@google.com>