INSTALL: Use exfat-utils package instead of exfatprogs

INSTALL: Use exfat-utils package instead of exfatprogs

The exfat-utils package is an older package complementing exfat-fuse, and
was the only exfat tools for a long time. The exfat filesystem testing code
was written with these tools in mind. A newer project exfatprogs appears to
be of better quality and functionality and was written to complement the
somewhat new exfat kernel module. Ideally we should be using the newer
exfatprogs. However, the command line interface for mkfs.exfat is different
between the two. So we can't use the exfatprogs tools until the test scripts
have been updated to account for this. Recommend installing exfat-utils
instead of exfatprogs for now.

Signed-off-by: Glenn Washburn <development@efficientek.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>