[Openstack] master foreach and fixes (#8709)

* [openstack] fix for new network modules

* [openstack] for-each master nodes

contrib/terraform/openstack/sample-inventory/cluster.tfvars

@@ -32,6 +32,28 @@ number_of_k8s_masters_no_floating_ip_no_etcd = 0
 
 flavor_k8s_master = "<UUID>"
 
+k8s_masters = {
+  # "master-1" = {
+  #   "az"          = "nova"
+  #   "flavor"      = "<UUID>"
+  #   "floating_ip" = true
+  #   "etcd" = true
+  # },
+  # "master-2" = {
+  #   "az"          = "nova"
+  #   "flavor"      = "<UUID>"
+  #   "floating_ip" = false
+  #   "etcd" = true
+  # },
+  # "master-3" = {
+  #   "az"          = "nova"
+  #   "flavor"      = "<UUID>"
+  #   "floating_ip" = true
+  #   "etcd" = true
+  # },
+}
+
+
 # nodes
 number_of_k8s_nodes = 2
 
@@ -52,6 +74,9 @@ number_of_k8s_nodes_no_floating_ip = 4
 # networking
 network_name = "<network>"
 
+# Use a existing network with the name of network_name. Set to false to create a network with name of network_name.
+# use_existing_network = true
+
 external_net = "<UUID>"
 
 subnet_cidr = "<cidr>"
@@ -59,3 +84,6 @@ subnet_cidr = "<cidr>"
 floatingip_pool = "<pool>"
 
 bastion_allowed_remote_ips = ["0.0.0.0/0"]
+
+# Force port security to be null. Some cloud providers do not allow to set port security.
+# force_null_port_security = false