New staging2 deployment @ SafeSpring + cleanups

staging2/terraform/vms.tf

@@ -42,7 +42,7 @@ resource "openstack_networking_secgroup_rule_v2" "ping6" {
   ethertype         = "IPv6"
   port_range_min    = 128
   port_range_max    = 0
-  protocol          = "icmp"
+  protocol          = "icmp"  # icmp / ipv6-icmp
   remote_ip_prefix  = "::/0"
   security_group_id = openstack_networking_secgroup_v2.ping.id
 }