OSX Automount schema from Active Directory

Hi,
in our company, we are thinking about switching to Windows Server 2016
and Active Directory. Right now we run LDAP/Open Directory on an old
Mac mini with OS X Server Lion, which does not seem like a sustainable
scenario for the future. Client workstations are Windows, OS X and
Linux machines. The server acts as a directory service for domain
authentication, logins, as the local DNS server and most importantly
provides mountpoint information for workstations to automatically
connect to our company's storage (which is a Dell Isilon cluster).
And that is where we have run into problems integrating Active
Directory with OS X. Joining the domain, logging in etc. works out of
the box, but so far we haven't come with a way of providing OS X with
mount information through AD. In the current setup with LDAP, OS X
retrieves the mounts a and handles them with autofs, and we expect
there must be a way of providing this through AD in a similar fashion.
Documentation on this topic both by Apple and Microsoft is very
sparse. I have followed instructions on extending the AD schema (e.g.
"Modifying the Active Directory Schema to Support Mac Systems"
http://markmail.org/download.xqy?id=f63mqp53otkqmgwi&number=1) but
with no avail. All of these tutorials seem somewhat outdated as they
were written at times when extending the AD schema was apparently
necessary even for OS X clients to bind with AD – I have not found any
newer information on whether this approach is still supported in
today's OS X (currently we run OS X Sierra on our workstations).
So my question stands: how must I extend the AD schema in order to
provide OS X clients with mount information? Where does OS X's
directory service look for mounts in the AD tree?
Just to be clear, we are not worried about mounting home directories
(that should probably work but we don't need that at all).