Update to new id/auth API that returns all supported 2FA methods

First step towards letting users pick the method they prefer.
3 jobs for switch-2fa in 2 minutes and 39 seconds
Status Job ID Name Coverage
  Build Pkgsrc
passed #7633
build_pkgsrc:stretch

00:00:17

 
  Build Pkg
passed #7634
amd64
build_pkg:stretch:amd64

00:00:53

passed #7635
arm64
build_pkg:stretch:arm64

00:02:21