avoid deprecation warnings

Author: jhongturney

script/bootstrap

@@ -10,7 +10,9 @@ DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && cd .. && pwd )"
 rm -rf "${DIR}/.bundle"
 
 echo 'Running bundler'
-bundle install --no-prune --path vendor/bundle --local
+bundle config set --local no_prune 'true'
+bundle config set --local path 'vendor/bundle'
+bundle install --local
 bundle clean
 bundle binstubs --force puppet pry rake rspec-core rubocop
 chmod 0755 bin/octofacts-updater