fix(os): Add plain text ZFS key file into initramfs, it lives inside an encrypted pool anyway (#1)

setup.sh

@@ -251,8 +251,10 @@ function set_locale () {
 }
 
 function add_zfs_hook_to_initramfs () {
-    # Add zfs hook, remove fsck hook from initramfs
+    # Add zfs hook, remove fsck hook from initramfs. Also add plain text key
+    # file into initramfs since it's living inside an encrypted pool anyway.
     sed -ri \
+        -e 's'$'\x1''^(FILES=)[^\r\n\f]*'$'\x1''\1(/etc/zfs/'"${zpool_name}"'.key)'$'\x1''g' \
         -e 's'$'\x1''(HOOKS=)(.*?[\(| ])(filesystems)([\)| ][^\r\n\f]*)'$'\x1''\1\2zfs \3\4'$'\x1''g' \
         -e 's'$'\x1''((\()(fsck)(\)))'$'\x1''\2\4'$'\x1''g' \
         -e 's'$'\x1''(([[:space:]]+)(fsck)|(fsck)([[:space:]]+))'$'\x1'''$'\x1''g' \