fix #1539

Signed-off-by: Samuel Greening <samjg60@gmail.com>

Author: SG60

internal/service/bastion/bastion_bastion_resource.go

@@ -45,16 +45,16 @@ func BastionBastionResource() *schema.Resource {
 				Required: true,
 				ForceNew: true,
 			},
-
-			// Optional
 			"client_cidr_block_allow_list": {
 				Type:     schema.TypeList,
-				Optional: true,
+				Required: true,
 				Computed: true,
 				Elem: &schema.Schema{
 					Type: schema.TypeString,
 				},
 			},
+
+			// Optional
 			"defined_tags": {
 				Type:             schema.TypeMap,
 				Optional:         true,

website/docs/r/bastion_bastion.html.markdown

@@ -39,7 +39,7 @@ resource "oci_bastion_bastion" "test_bastion" {
 The following arguments are supported:
 
 * `bastion_type` - (Required) The type of bastion. Use `standard`. 
-* `client_cidr_block_allow_list` - (Optional) (Updatable) A list of address ranges in CIDR notation that you want to allow to connect to sessions hosted by this bastion.
+* `client_cidr_block_allow_list` - (Required) (Updatable) A list of address ranges in CIDR notation that you want to allow to connect to sessions hosted by this bastion.
 * `compartment_id` - (Required) (Updatable) The unique identifier (OCID) of the compartment where the bastion is located.
 * `defined_tags` - (Optional) (Updatable) Defined tags for this resource. Each key is predefined and scoped to a namespace. Example: `{"foo-namespace.bar-key": "value"}` 
 * `dns_proxy_status` - (Optional) Flag to enable FQDN and SOCKS5 Proxy Support. Example: `ENABLED`, `DISABLED`