use ci-common tools from before 1.0

There were changes in the ci-common tooling that made the existing
Travis steps break. https://github.com/chef/ci-studio-common#changes-in-100

Signed-off-by: Robb Kidd <rkidd@chef.io>

.travis.yml

@@ -12,7 +12,7 @@ cache:
     - "$TRAVIS_BUILD_DIR/src/$COMPONENT/vendor/bundle"
 
 before_install:
-  - curl https://github.com/raw/chef/ci-studio-common/master/install.sh | bash
+  - curl https://github.com/raw/chef/ci-studio-common/master/install.sh | bash -- pre-1.0
   - export PATH="$PATH:$HOME/ci-studio-common/bin:$HOME/tools/bin"
 
 env: