Give security groups per-cluster names and reference them by name whe…

…n adding to instances

This works around this issue: hashicorp/terraform#6317

terraform/networking.tf

@@ -27,7 +27,7 @@ resource "openstack_networking_router_interface_v2" "router_interface_1" {
 
 resource "openstack_networking_secgroup_v2" "ssh_access" {
     region = "${var.region}"
-    name = "ssh_access"
+    name = "${var.cluster_name}-ssh_access"
     description = "Security groups for allowing SSH access"
 }
 
@@ -45,7 +45,7 @@ resource "openstack_networking_secgroup_rule_v2" "ssh_access_ipv4" {
 
 resource "openstack_networking_secgroup_v2" "kube_lb" {
     region = "${var.region}"
-    name = "kube_lb"
+    name = "${var.cluster_name}-kube_lb"
     description = "Security groups for allowing web access to lb nodes"
 }
 
@@ -75,7 +75,7 @@ resource "openstack_networking_secgroup_rule_v2" "kube_lb_https_ipv4" {
 
 resource "openstack_networking_secgroup_v2" "kube_master" {
     region = "${var.region}"
-    name = "kube_master"
+    name = "${var.cluster_name}_kube_master"
     description = "Security groups for allowing API access to the master nodes"
 }
 

terraform/testsetup.tf

@@ -28,8 +28,8 @@ resource "openstack_compute_instance_v2" "master" {
     key_pair = "${openstack_compute_keypair_v2.keypair.name}"
     security_groups = [
         "default",
-        "${openstack_networking_secgroup_v2.ssh_access.id}",
-        "${openstack_networking_secgroup_v2.kube_master.id}",
+        "${openstack_networking_secgroup_v2.ssh_access.name}",
+        "${openstack_networking_secgroup_v2.kube_master.name}",
     ]
     user_data = "#cloud-config\nhostname: ${var.cluster_name}-master-${count.index}\n"
 
@@ -64,8 +64,8 @@ resource "openstack_compute_instance_v2" "worker" {
     key_pair = "${openstack_compute_keypair_v2.keypair.name}"
     security_groups = [
         "default",
-        "${openstack_networking_secgroup_v2.ssh_access.id}",
-        "${openstack_networking_secgroup_v2.kube_lb.id}",
+        "${openstack_networking_secgroup_v2.ssh_access.name}",
+        "${openstack_networking_secgroup_v2.kube_lb.name}",
     ]
     user_data = "#cloud-config\nhostname: ${var.cluster_name}-worker-${count.index}\n"