Try autodiscover with bare name if we get 401 with address

* Some autodiscover servers appear to require the bare user name
  for authentication rather than the user's email address.  This
  is apparently common for complex organizations maintaining a
  group of email domains
* If we get a 401 when trying to connect to an autodiscover server
  using the email address, we try again using just the bare name

Bug: 2682833
Change-Id: Ia07ca336e189069d4f3539e2245b3d53c82e3324
1 file changed