add subnet dependency (#16)

Signed-off-by: Tim Robinson <[email protected]>

Author: timroster

README.md

@@ -23,12 +23,13 @@ This module makes use of the output from other modules:
 
 - Object Storage - github.com/cloud-native-toolkit/terraform-ibm-object-storage.git
 - VPC - github.com/cloud-native-toolkit/terraform-ibm-vpc.git
+- Subnet - github.com/cloud-native-toolkit/terraform-ibm-vpc.git
 
 ## Example usage
 
 ```hcl-terraform
 module "cluster" {
-  source = "github.com/cloud-native-toolkit/terraform-ibm-ocp-vpn.git?ref=v1.0.0"
+  source = "github.com/cloud-native-toolkit/terraform-ibm-ocp-vpc.git?ref=v1.2.5"
 
   resource_group_name = var.resource_group_name
   region              = var.region
@@ -39,8 +40,8 @@ module "cluster" {
   exists              = var.cluster_exists
   name_prefix         = var.name_prefix
   vpc_name            = module.vpc.name
-  vpc_subnet_count    = module.vpc.subnet_count
+  vpc_subnet_count    = module.subnet.subnet_count
+  vpc_subnets         = module.subnet.subnets
   cos_id              = module.cos.id
 }
 ```
-