Support AUTHENTICATE DIGEST-MD5 for OMTP visual voicemail
am: 61b586413d

* commit '61b586413d869212920e586a717148ef0b997d1d':
  Support AUTHENTICATE DIGEST-MD5 for OMTP visual voicemail

Change-Id: I9eef61b47df089e0eb0112fbcd3f7de452607aed