Reimport offered (#1731)

* Add method for importing the 'offered' field into already imported lettings logs

* Add minimal tests

* feat: update tests

* feat: update take task

* feat: update rake task

* feat: update rake task

* feat: update rake task spec

---------

Co-authored-by: Rachael Booth <rachael.booth@softwire.com>

lib/tasks/data_import_field.rake

@@ -9,7 +9,7 @@ namespace :core do
 
     # We only allow a reduced list of known fields to be updatable
     case field
-    when "tenant_code", "major_repairs", "lettings_allocation"
+    when "tenancycode", "major_repairs", "lettings_allocation", "offered"
       Imports::LettingsLogsFieldImportService.new(storage_service).update_field(field, path)
     else
       raise "Field #{field} cannot be updated by data_import_field"

spec/lib/tasks/date_import_field_spec.rb

@@ -28,8 +28,8 @@ describe "rake core:data_import_field", type: :task do
       allow(import_service).to receive(:update_field)
     end
 
-    context "and we update the tenant_code field" do
-      let(:field) { "tenant_code" }
+    context "and we update the tenancycode field" do
+      let(:field) { "tenancycode" }
 
       it "properly configures the storage service" do
         expect(Storage::S3Service).to receive(:new).with(paas_config_service, instance_name)