Added Permanent property to configure redirect in RequireHttpsAttribute

[khellang]

As promised in #4579

Fixes #4561

[Eilon]

@khellang thanks for the PR! I've assigned this to an engineer on the team and we'll get it reviewed and merged ASAP.

[sebastienros]

LGTM, I am still trying to run it locally, facing some unrelated issues right now.

[ShadowDancer]

That's great, but how can I set Permanent property after adding filter globally?
Something like this:
services.AddMvc( opt => { opt.Filters.Add(typeof (RequireHttpsAttribute)); });

Currently I have to create my own wrapper filter. Maybe such filter should be in framework(RequireHttpsPermanentAttribute) or configurable with IOptions?

[pranavkm]

@ShadowDancer, you should be able to add an instance of the attribute to the filter collection:
opt.Filters.Add(new RequireHttpsAttribute { Permanent = true })