8086f72 support nfsvers=x parameter as nfs option

Authored and Committed by Michel Normand 6 years ago
    support nfsvers=x parameter as nfs option
    
    Required to validate bypass for pending bug
    https://bugzilla.redhat.com/show_bug.cgi?id=1386059
    
    Signed-off-by: Michel Normand <normand@linux.vnet.ibm.com>