font-display CSS property for Roboto fonts

[sdvinfo]

Add, please, the font-dysplay CSS property for the Roboto fonts to fix the problem of slow loading in chrome dev-tools

Software version

Chrome (65.0.3325.181) dev-tools.

What did you get as the error?

Slow network is detected. See https://www.chromestatus.com/feature/5636954674692096 for more details. Fallback font will be used while loading: http://localhost:8080/fonts/Roboto-Regular.081b11e.woff

What were you expecting?

• No warning messages in dev-tools.
• css style for roboto-fonts contains font-display property other than 'auto'

What steps did you take, to get the error?

Error appears due to refresh page in development machine