Add a function that tests can use to skip when the metadata device isn't
large enough. I thought we needed to avoid enospc in a particular test,
but it turns out the test's failure was unrelated. So this isn't used
for now but it seems nice to keep around.
Signed-off-by: Zach Brown <zab@versity.com>
The first commit of the scoutfs-tests suite which uses multiple mounts
on one host to test multi-node scoutfs.
Signed-off-by: Zach Brown <zab@versity.com>