add previous resource tags property to request

Author: eduardomourar

src/interface.ts

@@ -275,6 +275,7 @@ export class UnmodeledRequest extends BaseResourceHandlerRequest<BaseModel> {
         >({
             clientRequestToken: this.clientRequestToken,
             desiredResourceTags: this.desiredResourceTags,
+            previousResourceTags: this.previousResourceTags,
             systemTags: this.systemTags,
             awsAccountId: this.awsAccountId,
             logicalResourceIdentifier: this.logicalResourceIdentifier,

src/resource.ts

@@ -231,6 +231,7 @@ export abstract class BaseResource<T extends BaseModel = BaseModel> {
                 desiredResourceState: request.requestData.resourceProperties,
                 previousResourceState: request.requestData.previousResourceProperties,
                 desiredResourceTags: request.requestData.stackTags,
+                previousResourceTags: request.requestData.previousStackTags,
                 systemTags: request.requestData.systemTags,
                 awsAccountId: request.awsAccountId,
                 logicalResourceIdentifier: request.requestData.logicalResourceId,

tests/lib/resource.test.ts

@@ -324,6 +324,7 @@ describe('when getting resource', () => {
             desiredResourceState: { state: 'state1' },
             previousResourceState: { state: 'state2' },
             desiredResourceTags: request.requestData.stackTags,
+            previousResourceTags: request.requestData.previousStackTags,
             systemTags: request.requestData.systemTags,
             awsAccountId: request.awsAccountId,
             logicalResourceIdentifier: 'myBucket',