bokeh warning

[ax3l]

I currently see the following warning with bokeh 2.3.2:

BokehDeprecationWarning: 'legend' keyword is deprecated, use explicit 'legend_label', 'legend_field', or 'legend_group' keywords instead

likely from:

perf_logs/generate_index_html.py

Lines 117 to 118 in 1db3baa

	fig.circle(x_data, y_data, size=5, fill_color=color, line_color=color,
	alpha=.5, legend=input_file.replace('automated_test_',''))