added vars file

vars.tf

+# These are the defined variables used in all the modules. They are referenced in the modules, and defined here.
+# This is where you would change any variable values.
+
+# variables for networks and router 
+variable "admin_state_up" {default = true}
+variable "enable_dhcp" {default = true}
+
+# variable for floating-ip - also used in exrernal network creation
+variable "public_network_name" {default = "bright-external-flat-externalnet"}
+ 
+# variables for keypair module
+variable "keypair_name" {default = "os-gen-keypair"}
+variable "ssh_public_key" {default = "~/.ssh/id_rsa.pub"}
+ 
+# variables for instance modules
+variable "ohpc_instance_name" {default = "ohpc"}
+variable "ood_instance_name" { default = "ood"}
+variable "image_ohpc" {default = "CentOS-7-x86_64-GenericCloud-1905"}
+variable "image_ood" {default = "CentOS-7-x86_64-GenericCloud-1905"}
+variable "flavor" {default = "m1.medium"}
+variable "internal_net" {default = "clusternet"}
+variable "external_net" {default = "dmznet"}
+variable "host_prefix" {default = "164.111.161.%s"}
+variable "ohpc_user" {default = "centos"}
+variable "ood_user" {default = "centos"}
+variable "ssh_private_key" {default = "~/.ssh/id_rsa"}
+
+
+# variables for node creation module
+variable "image_compute" {default = "CentOS-7-x86_64-GenericCloud-1905"}
+variable "compute_node_count" {default = 2}