pmxcfs: bump basic FS limits, 1 MiB per-file, 128 MiB total

pmxcfs: bump basic FS limits, 1 MiB per-file, 128 MiB total

We have some users running into issues in some cases, like syncing
huge user base through LDAP into users.cfg or having a few thousands+
of HA services, as then the per-file limit is exhausted.

Bumping that one provides only half of the solution as the total
limit of 30 MiB would only allow a few files getting that big, or
reduce the amount left over for actual guest configurations quite a
bit.

So also bump the total filesystem limit from 30 MiB to 128 MiB, so by
a factor of ~4 and in the same spirit bump the maximal numbers of
inodes (i.e., different files) from 10k to 256k, which pmxcfs can
handle still rather easily (tested with touch) and would allow to max
out the full FS limit with 512 byte files, which fits small guest
configs, so sounds like an OK proportioned limit.

That should give use quite some wiggle room again, and should be
relatively safe as most of our access is rather small and on a few
files only, only root has full access anyway and that user can break
everything already, so not much lost here.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>