Updated libcmis 2FA patch:
+ changed challenge page parser
+ handled abort in the auth code provider

Change-Id: I2bbb102ec735788132e094d3908ac12432e9508c
Reviewed-on: https://gerrit.libreoffice.org/25372Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>