Fix unit tests for tgc (GoogleCloudPlatform#13971)

Author: zli82016

mmv1/third_party/tgc_next/pkg/tfplan2cai/models/fake_resource_data_with_meta_test.go

@@ -242,7 +242,6 @@ func TestFakeResourceDataWithMeta_getOkTypeObject(t *testing.T) {
 		"disk_encryption_key_sha256":      "",
 		"disk_encryption_key_rsa":         "",
 		"disk_encryption_service_account": "",
-		"force_attach":                    false,
 		"kms_key_self_link":               "test-kms_key_self_link",
 		"mode":                            "READ_ONLY",
 		"source":                          "test-source",
@@ -322,7 +321,6 @@ func TestFakeResourceDataWithMeta_getOknsetTypeObject(t *testing.T) {
 		"disk_encryption_key_sha256":      "",
 		"disk_encryption_key_rsa":         "",
 		"disk_encryption_service_account": "",
-		"force_attach":                    false,
 		"kms_key_self_link":               "",
 		"mode":                            "",
 		"source":                          "",