When the test is run in OSCI, all the packages from the build are
installed - not just nfs-utils. The nfsv4-client-utils package installs
/etc/nfsmount.conf.d/10-nfsv4.conf config snippet, which we need to
disable before we do the version negotiation test or it will fail.
Resolves: RHEL-65829
Signed-off-by: Scott Mayhew <smayhew@redhat.com>