cmd/getgo: fix builds

A couple fixes:

* Disable integration tests in short mode.
* Remove import of "google.golang.org/appengine" package. App Engine has
two ways to create an app: as a main package and calling
appengine.Main(), and as any regular Go package with handlers registered
in init().

Change-Id: Ib416111786c1c86cf428d91c60dc406c251d3ca1
Reviewed-on: https://go-review.googlesource.com/52211
Run-TryBot: Chris Broadfoot <cbro@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Jaana Burcu Dogan <jbd@google.com>
2 files changed