Updated node_pools variable documentation

autogen/README.md

@@ -183,6 +183,22 @@ In order to operate with the Service Account you must activate the following API
 - Compute Engine API - compute.googleapis.com
 - Kubernetes Engine API - container.googleapis.com
 
+## node_pools Variable
+The node_pools variable takes the following parameters:
+
+name - (Optional) The name of the node pool. If left blank, Terraform will auto-generate a unique name
+min_count - (Required) Minimum number of nodes in the NodePool. Must be >=0 and <= max_count
+max_count - (Required) Maximum number of nodes in the NodePool. Must be >= min_count
+machine_type - (Optional) The name of a Google Compute Engine machine type. Defaults to n1-standard-1
+disk_size_gb - (Optional) Size of the disk attached to each node, specified in GB. The smallest allowed disk size is 10GB. Defaults to 100GB
+disk_type - (Optional) Type of the disk attached to each node (e.g. 'pd-standard' or 'pd-ssd'). If unspecified, the default disk type is 'pd-standard'
+image_type - (Optional) The image type to use for this node. Note that changing the image type will delete and recreate all nodes in the node pool
+preemptible - (Optional) A boolean that represents whether or not the underlying node VMs are preemptible
+service_account - (Optional) The service account to be used by the Node VMs. If not specified, the "default" service account is used
+initial_node_count - (Optional) The initial number of nodes for the pool. In regional or multi-zonal clusters, this is the number of nodes per zone. Changing this will force recreation of the resource
+auto_repair - (Optional) Whether the nodes will be automatically repaired
+auto_upgrade - (Optional) Whether the nodes will be automatically upgraded
+
 ## File structure
 The project has the following folders and files: