fixup choropleth select test
fixup choropleth select test

- PR https://github.com/plotly/plotly.js/pull/2099 got merged
  on a branch behind https://github.com/plotly/plotly.js/pull/2081
  which caused the test to fail on master.

etpinard/plotly.js,asolagmbh/plotly.js,plotly/plotly.js,asolagmbh/plotly.js,iongroup/plotly.js,iongroup/plotly.js,etpinard/plotly.js,aburato/plotly.js,etpinard/plotly.js,plotly/plotly.js,plotly/plotly.js,iongroup/plotly.js,asolagmbh/plotly.js,aburato/plotly.js,plotly/plotly.js