cy.request clarify on status code failures, enable 3xx to be successful

[brian-mann]

Currently the failOnStatus property can be passed to cy.request to turn off failing based on a non 2xx status code.

This needs to be upgraded to also not fail on 3xx status code, and we should rename this property to be failOnStatusCode to clarify what this property does.

We'll keep the old property name backwards compatible for now and log a deprecation warning.

[brian-mann]

Fixed in 0.18.1.

[royc-adsk]

Is status code 302 is supported by Cypress?

[jennifer-shehane]

@royc-adsk yes