Fix path to gcloud

Signed-off-by: Nolan Brubaker <brubakern@vmware.com>

.travis.yml

@@ -19,8 +19,8 @@ before_deploy:
   - sudo apt-get remove google-cloud-sdk
   - if [ ! -d ${HOME}/google-cloud-sdk ]; then curl https://sdk.cloud.google.com | bash
     /dev/stdin --disable-prompts; fi
-  - export PATH=/home/travs/google-cloud-sdk/bin:$PATH && echo "$PATH"
-  - $HOME/gcloud --version
+  - export PATH=${HOME}/google-cloud-sdk/bin:$PATH && echo "$PATH"
+  - which gcloud
 
 deploy:
   - provider: script