update ZFS to 2.0

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

diff --git a/submodules/zfsonlinux b/submodules/zfsonlinux
index 5548e2b0b1d21b6b8bf05ef1c1313d16be7df418..363c009381207615ba5880124e195c1263223add 160000 (submodule)
--- a/submodules/zfsonlinux
+++ b/submodules/zfsonlinux
@@ -1 +1 @@
-Subproject commit 5548e2b0b1d21b6b8bf05ef1c1313d16be7df418
+Subproject commit 363c009381207615ba5880124e195c1263223add