[ATMOSPHERE-492] chore: Bump neutron to 0.3.47 (#2005)

This is an automated cherry-pick of #1957
/assign ricolin
Depends-On: #2028
diff --git a/roles/defaults/vars/main.yml b/roles/defaults/vars/main.yml
index 5835207..4afe501 100644
--- a/roles/defaults/vars/main.yml
+++ b/roles/defaults/vars/main.yml
@@ -151,6 +151,7 @@
   neutron_netns_cleanup_cron: "registry.atmosphere.dev/library/neutron:{{ atmosphere_release }}"
   neutron_openvswitch_agent: "registry.atmosphere.dev/library/neutron:{{ atmosphere_release }}"
   neutron_ovn_metadata: "registry.atmosphere.dev/library/neutron:{{ atmosphere_release }}"
+  neutron_ovn_vpn: "registry.atmosphere.dev/library/neutron:{{ atmosphere_release }}"
   neutron_server: "registry.atmosphere.dev/library/neutron:{{ atmosphere_release }}"
   neutron_rpc_server: "registry.atmosphere.dev/library/neutron:{{ atmosphere_release }}"
   neutron_sriov_agent_init: "registry.atmosphere.dev/library/neutron:{{ atmosphere_release }}"