chore: add wip errata doc for v2 (terraform-google-modules#405)

* chore: add wip errata doc for v1

* Apply suggestions from code review

Co-authored-by: Daniel Andrade <[email protected]>

* Update ERRATA.md

Co-authored-by: Daniel Andrade <[email protected]>

Author: bharathkkb

ERRATA.md

@@ -1,19 +1,40 @@
-## Errata Summary
+# Errata Summary
 This is an overview of the delta between the example foundation repository and the [Google Cloud security foundations guide](https://services.google.com/fh/files/misc/google-cloud-security-foundations-guide.pdf), including code discrepancies and notes on future automation. This document will be updated as new code is merged.
 
+## 2.x [WIP]
 ### Code Discrepancies
 
-##### Labeling
+#### Labeling
 - The guide defines vpc-type for shared, service, float, nic, and peer projects. It does not define a vpc-type for Jenkins agents (vpc-b-jenkinsagents), the DNS Hub (vpc-dns-hub) and projects created in 4-projects.
-This will be addressed in the next version of the whitepaper.
+This will be addressed in the next version of the blueprint guide.
 
-##### Naming
+#### Naming
+- The Service Account naming is not aligned to the blueprint guide. Naming will be modified accordingly in a future release.
+- The infrastructure pipeline project naming (`prj-buN-c-infra-pipeline`) is not aligned to the blueprint guide(`prj-buN-c-sample-infra-pipeline`). Naming will be modified accordingly in a future release.
+
+#### Networking
+- The “allow-windows-activation” rule that exists in the code is not explicitly called out in the guide.
+
+#### Notes
+- The BigQuery Log Detection solution, described in Section 10 will be integrated in a future release.
+- Splunk log integration will be integrated in a future release.
+- Cloud Asset Inventory will be integrated in a future release.
+- The unallocated IP address space in the Shared VPC networks, described in Section 7.3, is currently being used by Private Service Networking in this release.
+
+## [1.x](https://github.com/terraform-google-modules/terraform-example-foundation/releases/tag/v1.0.0)
+### Code Discrepancies
+
+#### Labeling
+- The guide defines vpc-type for shared, service, float, nic, and peer projects. It does not define a vpc-type for Jenkins agents (vpc-b-jenkinsagents), the DNS Hub (vpc-dns-hub) and projects created in 4-projects.
+This will be addressed in the next version of the blueprint guide.
+
+#### Naming
 - The Service Account & Storage bucket naming are not aligned to the blueprint guide. Naming will be modified accordingly in a future release.
 
-##### Pre-deployment Check
+#### Pre-deployment Check
 - Terraform Validator, described in Section 5.2, is not implemented in the Cloud Build and Jenkins pipelines, but will be integrated in a future release.
 
-### Notes
+#### Notes
 - The BigQuery Log Detection solution, described in Section 10 will be integrated in a future release.
 - Splunk log integration will be integrated in a future release.
 - Cloud Asset Inventory will be integrated in a future release.