Fix import issue for Dataplex Datascan (GoogleCloudPlatform#8578)

mmv1/products/dataplex/Datascan.yaml

@@ -642,6 +642,7 @@ properties:
   - !ruby/object:Api::Type::NestedObject
     name: 'dataProfileResult'
     output: true
+    custom_flatten: templates/terraform/custom_flatten/dataplex_datascan_ignore_profile_result.go.erb
     description: |
       The result of the data profile scan.
     properties:

mmv1/templates/terraform/custom_flatten/dataplex_datascan_ignore_profile_result.go.erb

@@ -0,0 +1,18 @@
+<%# The license inside this block applies to this file.
+	# Copyright 2022 Google Inc.
+	# Licensed under the Apache License, Version 2.0 (the "License");
+	# you may not use this file except in compliance with the License.
+	# You may obtain a copy of the License at
+	#
+	#     http://www.apache.org/licenses/LICENSE-2.0
+	#
+	# Unless required by applicable law or agreed to in writing, software
+	# distributed under the License is distributed on an "AS IS" BASIS,
+	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+	# See the License for the specific language governing permissions and
+	# limitations under the License.
+-%>
+func flatten<%= prefix -%><%= titlelize_property(property) -%>(v interface{}, d *schema.ResourceData, config *transport_tpg.Config) interface{} {
+	// We want to ignore read on this field, but cannot because it is nested
+	return nil
+}