Not sure how this hasn't come up earlier. We aren't noticing file
changes on-disk for go.mod/go.sum files.
Fixesgolang/vscode-go#297
Change-Id: I4532a252f330404515efec244a9c266a765e6bcb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242160
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>