Added min_instances, max_instances, min_throughput and max_throughtpu… (#2706)

* Added min_instances, max_instances, min_throughput and max_throughtput to connector configuration

* refactor interface, also implement in v1 module

* fix blueprint

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Co-authored-by: Ludo <ludomagno@google.com>

modules/cloud-function-v1/variables.tf

@@ -222,6 +222,22 @@ variable "vpc_connector_config" {
   type = object({
     ip_cidr_range = string
     network       = string
+    instances = optional(object({
+      max = optional(number)
+      min = optional(number, 2)
+    }))
+    throughput = optional(object({
+      max = optional(number, 300)
+      min = optional(number, 200)
+    }))
   })
   default = null
+  validation {
+    condition = (
+      var.vpc_connector_config == null ||
+      try(var.vpc_connector_config.instances, null) != null ||
+      try(var.vpc_connector_config.throughput, null) != null
+    )
+    error_message = "VPC connector must specify either instances or throughput."
+  }
 }