Add Find method on DbSet

[kirthik]

In the old world, we have Find method on Dbset that is missing in the new world. It would be nice to have this in new EF world too.

[bricelam]

Note for triage: I'm marking this for re-triage since I'm seeing more and more people asking about this and we haven't done any work on the mitigation we once talked about in the early days of EF7.

[jasoncavett]

Is FindAsync also in the consideration here as well or is that a separate issue?

[divega]

@jasoncavett You can consider FindAsync() part of this issue.

[rowanmiller]

I've seen some good discussion and feedback on this on the ASP.NET Insiders mailing list. We should re-discuss and maybe pull it into RTM.