(PDB-3917) configure-int-tests: require existing bundler install
(PDB-3917) configure-int-tests: require existing bundler install

rbrw/puppetdb,puppetlabs/puppetdb,puppetlabs/puppetdb,rbrw/puppetdb,puppetlabs/puppetdb,puppetlabs/puppetdb,rbrw/puppetdb,rbrw/puppetdb,puppetlabs/puppetdb,rbrw/puppetdb