all: fix travis build pt 2

Added go_appengine directory to PATH.

Change-Id: Iad959c15c1cc62ac31018f3fddb76e348d97c609
Reviewed-on: https://go-review.googlesource.com/78437
Reviewed-by: Ross Light <light@google.com>
diff --git a/.travis.yml b/.travis.yml
index d1687cd..03c46b4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,9 +12,11 @@
   - unzip -q gae_sdk.zip -d ~
 services:
   - redis-server
+before_script:
+  - export PATH=$PATH:"$HOME/go_appengine"
 script:
   - go test -v $(go list ./... | grep -v '/vendor\|gae-service-proxy\|talksapp\|lintapp')
   - pushd talksapp
   - ./setup.sh
-  - go test -v .
+  - goapp test -v .
   - popd