fixed diff in publishing_options (GoogleCloudPlatform#5045)

* fixed diff in publishing_options

* Update api.yaml

mmv1/products/privateca/terraform.yaml

@@ -134,6 +134,8 @@ overrides: !ruby/object:Overrides::ResourceOverrides
         custom_flatten: 'templates/terraform/custom_flatten/privateca_certificate_509_config.go.erb'
       issuancePolicy.baselineValues.caOptions.maxIssuerPathLength: !ruby/object:Overrides::Terraform::PropertyOverride
         send_empty_value: true
+      publishingOptions: !ruby/object:Overrides::Terraform::PropertyOverride
+        diff_suppress_func: 'emptyOrUnsetBlockDiffSuppress'
     iam_policy: !ruby/object:Api::Resource::IamPolicy
       allowed_iam_role: 'roles/privateca.certificateManager'
       method_name_separator: ':'

mmv1/third_party/terraform/tests/resource_privateca_ca_pool_test.go

@@ -276,3 +276,45 @@ resource "google_privateca_ca_pool" "default" {
 }
 `, context)
 }
+
+func TestAccPrivatecaCaPool_privatecaCapoolEmptyPublishingOptions(t *testing.T) {
+	t.Parallel()
+
+	context := map[string]interface{}{
+		"random_suffix": randString(t, 10),
+	}
+
+	vcrTest(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckPrivatecaCaPoolDestroyProducer(t),
+		Steps: []resource.TestStep{
+			{
+				Config: testAccPrivatecaCaPool_privatecaCapoolEmptyPublishingOptions(context),
+			},
+			{
+				ResourceName:            "google_privateca_ca_pool.default",
+				ImportState:             true,
+				ImportStateVerify:       true,
+				ImportStateVerifyIgnore: []string{"name", "location"},
+			},
+		},
+	})
+}
+
+func testAccPrivatecaCaPool_privatecaCapoolEmptyPublishingOptions(context map[string]interface{}) string {
+	return Nprintf(`
+resource "google_privateca_ca_pool" "default" {
+  name = "tf-test-my-capool%{random_suffix}"
+  location = "us-central1"
+  tier = "ENTERPRISE"
+  publishing_options {
+    publish_ca_cert = false
+    publish_crl = false
+  }
+  labels = {
+    foo = "bar"
+  }
+}
+`, context)
+}