chore: lock into exact ocp version in asic example (#104)

Author: ocofaigh

examples/basic/main.tf

@@ -86,7 +86,7 @@ module "ocp_base" {
   force_delete_storage = true
   vpc_id               = ibm_is_vpc.vpc.id
   vpc_subnets          = local.cluster_vpc_subnets
-  ocp_version          = var.ocp_version
+  ocp_version          = "4.19"
   worker_pools         = local.worker_pools
   access_tags          = var.access_tags
   ocp_entitlement      = var.ocp_entitlement

examples/basic/variables.tf

@@ -34,12 +34,6 @@ variable "resource_tags" {
   default     = []
 }
 
-variable "ocp_version" {
-  type        = string
-  description = "Version of the OCP cluster to provision."
-  default     = null
-}
-
 variable "access_tags" {
   type        = list(string)
   description = "A list of access tags to apply to the resources created by the module."