meta-google: nftables: Make rule loading atomic

This ensures that all of the rules are processed and unexpected packets
are not allowed or blocked by the kernel at any time.

Change-Id: Ia7bb1d7f604f8ed1bd9759a23e370d20cb0c690d
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/meta-google/recipes-google/nftables/files/nftables.service b/meta-google/recipes-google/nftables/files/nftables.service
index 770a3d3..1a93812 100644
--- a/meta-google/recipes-google/nftables/files/nftables.service
+++ b/meta-google/recipes-google/nftables/files/nftables.service
@@ -5,6 +5,7 @@
 Type=oneshot
 RemainAfterExit=yes
 ExecStart=/usr/libexec/nft-configure.sh
+ExecReload=/usr/libexec/nft-configure.sh
 ExecStop=/usr/sbin/nft flush ruleset
 
 [Install]