Install gae-python in travis.yml

Author: Takashi Matsuo

.travis.yml

@@ -6,7 +6,7 @@ cache:
   directories:
         - $HOME/gcloud/
 env:
-        - PATH=$PATH:$HOME/gcloud/google-cloud-sdk/bin GOOGLE_APPLICATION_CREDENTIALS=$TRAVIS_BUILD_DIR/client_secrets.json PYTHONPATH=${HOME}/gcloud/google-cloud-sdk/platform/google_appengine #Other environment variables on same line
+        - PATH=$PATH:$HOME/gcloud/google-cloud-sdk/bin GOOGLE_APPLICATION_CREDENTIALS=$TRAVIS_BUILD_DIR/python-docs-samples.json PYTHONPATH=${HOME}/gcloud/google-cloud-sdk/platform/google_appengine #Other environment variables on same line
 
 before_install:
         #ENCRYPT YOUR PRIVATE KEY (If you need authentication)
@@ -28,7 +28,7 @@ before_install:
                 printf '\ny\n\ny\ny\n' | ./google-cloud-sdk/install.sh &&
                 cd $TRAVIS_BUILD_DIR;
           fi
-        - printf 'y\n' | gcloud components update
+        - gcloud -q components update gae-python
         - openssl aes-256-cbc -K $encrypted_4fda24e244ca_key -iv $encrypted_4fda24e244ca_iv -in python-docs-samples.json.enc -out python-docs-samples.json -d
         - if [ -a python-docs-samples.json ]; then
                 gcloud auth activate-service-account --key-file python-docs-samples.json;