Add some more default "zpool create" options

Loosely based on https://openzfs.github.io/openzfs-docs/Getting%20Started/Ubuntu/Ubuntu%2020.04%20Root%20on%20ZFS.html#step-2-disk-formatting

[ci skip]

doc/deploying.markdown

@@ -79,13 +79,12 @@ sudo chmod 600 /zfspool
 
 # Create a single "space" ZFS pool for all data
 # (replace /zfspool with a path to your disk device)
-sudo zpool create -o ashift=12 space /zfspool
+sudo zpool create -o ashift=12 -o autotrim=on -O compression=lz4 -O acltype=posixacl -O dnodesize=auto -O normalization=formD -O relatime=on -O xattr=sa space /zfspool
 
 # Create "space/mediacloud" ZFS filesystem for Media Cloud data
 sudo zfs create space/mediacloud
 
 # Enable compression and optimize the filesystem (and its descendants)
-sudo zfs set compression=lz4 space/mediacloud
 sudo zfs set recordsize=16K space/mediacloud
 sudo zfs set primarycache=metadata space/mediacloud
 sudo zfs set atime=off space/mediacloud