Add explicit Conflicts for zfs-fuse packages

zfs-fuse provides the same commands and man page names as ZoL.
Changing the names on either side would make each incompatible with
all existing documentation about ZFS. Providing bit identical files
is not possible due to differing codebases.

Signed-off-by: Richard Yao <ryao@gentoo.org>
Signed-off-by: Turbo Fredriksson <turbo@bayour.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #1866

rpm/generic/zfs.spec.in

@@ -48,6 +48,10 @@ Requires:       spl = %{version}
 Requires:       %{name}-kmod = %{version}
 Provides:       %{name}-kmod-common = %{version}
 
+# zfs-fuse provides the same commands and man pages that ZoL does. Renaming
+# those on either side would conflict with all available documentation.
+Conflicts:      zfs-fuse
+
 %if 0%{?rhel}%{?fedora}%{?suse_version}
 BuildRequires:  zlib-devel
 BuildRequires:  libuuid-devel