nfs and nfs4 mounts on same host not supported?

[KlavsKlavsen]

Looking at nfs::client::mount - it only has a central switch for nfsv4 - which forces all mounts to be nfsv4..
Which means, if I have a host who needs to mount from one server - running nfs4 and another host - which runs nfs (nfsv3).. I can't use this class :(

Would you accept a PR for a per-mount Boolean setting of nfsv4 ?

[dwerder]

Send a PR if you like. The PR sould be against the develop branch.

[ppickfor]

Will #105 resolve this?