make provisioned_iops Computed true

.changelog/6222.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+compute: fixed force recreation on `provisioned_iops` of `google_compute_disk`
+```

google/resource_compute_disk.go

@@ -363,6 +363,7 @@ the supported values for the caller's project.`,
 			},
 			"provisioned_iops": {
 				Type:        schema.TypeInt,
+				Computed:    true,
 				Optional:    true,
 				ForceNew:    true,
 				Description: `Indicates how many IOPS must be provisioned for the disk.`,

google/resource_compute_disk_test.go

@@ -437,6 +437,27 @@ func TestAccComputeDisk_deleteDetachIGM(t *testing.T) {
 	})
 }
 
+func TestAccComputeDisk_pdExtremeImplicitProvisionedIops(t *testing.T) {
+	t.Parallel()
+
+	diskName := fmt.Sprintf("tf-test-%s", randString(t, 10))
+
+	vcrTest(t, resource.TestCase{
+		PreCheck:  func() { testAccPreCheck(t) },
+		Providers: testAccProviders,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccComputeDisk_pdExtremeImplicitProvisionedIops(diskName),
+			},
+			{
+				ResourceName:      "google_compute_disk.foobar",
+				ImportState:       true,
+				ImportStateVerify: true,
+			},
+		},
+	})
+}
+
 func testAccCheckComputeDiskExists(t *testing.T, n, p string, disk *compute.Disk) resource.TestCheckFunc {
 	return func(s *terraform.State) error {
 		rs, ok := s.RootModule().Resources[n]
@@ -722,3 +743,13 @@ resource "google_compute_instance_group_manager" "manager" {
 }
 `, diskName, mgrName)
 }
+
+func testAccComputeDisk_pdExtremeImplicitProvisionedIops(diskName string) string {
+	return fmt.Sprintf(`
+resource "google_compute_disk" "foobar" {
+  name  = "%s"
+  type = "pd-extreme"
+  size = 1
+}
+`, diskName)
+}