Travis CI has suggested a fix for the git pull issue

Signed-off-by: liz <liz@heptio.com>

.travis.yml

@@ -13,8 +13,6 @@ before_install:
 - if [ ! -d ${HOME}/google-cloud-sdk ]; then
  curl https://sdk.cloud.google.com | bash /dev/stdin --disable-prompts;
  fi
-# go get doesn't seem to work in deploy step, so fetch it here instead
-- go get -u github.com/estesp/manifest-tool
 
 deploy:
 - provider: script

travis-deploy.sh

@@ -15,6 +15,8 @@ function goreleaser() {
 function gcr_push() {
  openssl aes-256-cbc -K $encrypted_708bef23737d_key -iv $encrypted_708bef23737d_iv -in heptio-images-ee4b0474b93e.json.enc -out ./heptio-images-ee4b0474b93e.json -d
  gcloud auth activate-service-account --key-file heptio-images-ee4b0474b93e.json
+ # https://github.com/travis-ci/travis-ci/issues/9905
+ unset GIT_HTTP_USER_AGENT
  IMAGE_BRANCH="$TRAVIS_BRANCH" DOCKER="gcloud docker -- " make container push
 }