[systemd] disable default systemd udev rules for interfaces (#7369)

Fix #7364

99-default.link - was always in SONiC, but previous systemd (<247) had an issue and it did not work due to issue systemd/systemd#3374. Now systemd 247 works.

However, such policy overrides teamd provided mac address which causes teamd netdev to use a random mac
address. Therefore, needs to be disabled.

Signed-off-by: Stepan Blyschak <stepanb@nvidia.com>

Author: stepanblyschak

files/build_templates/sonic_debian_extension.j2

@@ -399,6 +399,9 @@ sudo cp files/dhcp/90-dhcp6-systcl.conf.j2 $FILESYSTEM_ROOT_USR_SHARE_SONIC_TEMP
 sudo cp $IMAGE_CONFIGS/interfaces/init_interfaces $FILESYSTEM_ROOT/etc/network/interfaces
 sudo mkdir -p $FILESYSTEM_ROOT/etc/network/interfaces.d
 
+# System'd network udev rules
+sudo cp $IMAGE_CONFIGS/systemd/network/* $FILESYSTEM_ROOT_ETC/systemd/network/
+
 # copy core file uploader files
 sudo cp $IMAGE_CONFIGS/corefile_uploader/core_uploader.service $FILESYSTEM_ROOT_USR_LIB_SYSTEMD_SYSTEM
 sudo LANG=C chroot $FILESYSTEM_ROOT systemctl disable core_uploader.service

files/image_config/systemd/network/99-default.link

@@ -0,0 +1,7 @@
+[Match]
+OriginalName=*
+
+[Link]
+# Override default systemd policy
+MACAddressPolicy=none
+