improve tests of plotly_relayouting for gl3d plots
improve tests of plotly_relayouting for gl3d plots

aburato/plotly.js,etpinard/plotly.js,plotly/plotly.js,etpinard/plotly.js,etpinard/plotly.js,plotly/plotly.js,plotly/plotly.js,aburato/plotly.js,plotly/plotly.js