fix: update modules references to point to hashicorp module registry

Author: mounika-nalla

README.md

@@ -33,8 +33,8 @@ If the `clean_default_security_group` or `clean_default_acl` input variables are
 ## Usage
 ```terraform
 module vpc {
-  # Replace "main" with a GIT release version to lock into a specific release
-  source                      = "git::https://github.com/terraform-ibm-modules/terraform-ibm-landing-zone-vpc.git?ref=main"
+  source  = "terraform-ibm-modules/landing-zone-vpc/ibm"
+  version = "latest" # Replace "latest" with a release version to lock into a specific release
   resource_group_id           = var.resource_group_id
   region                      = var.region
   prefix                      = var.prefix

examples/landing_zone/main.tf

@@ -3,7 +3,8 @@
 ##############################################################################
 
 module "resource_group" {
-  source = "git::https://github.com/terraform-ibm-modules/terraform-ibm-resource-group.git?ref=v1.0.5"
+  source  = "terraform-ibm-modules/resource-group/ibm"
+  version = "1.0.5"
   # if an existing resource group is not set (null) create a new one using prefix
   resource_group_name          = var.resource_group == null ? "${var.prefix}-resource-group" : null
   existing_resource_group_name = var.resource_group
@@ -15,7 +16,8 @@ module "resource_group" {
 
 module "cos_bucket" {
   count                  = var.enable_vpc_flow_logs ? 1 : 0
-  source                 = "git::https://github.com/terraform-ibm-modules/terraform-ibm-cos.git?ref=v6.6.1"
+  source                 = "terraform-ibm-modules/cos/ibm"
+  version                = "6.6.2"
   resource_group_id      = module.resource_group.resource_group_id
   region                 = var.region
   cross_region_location  = null
@@ -64,7 +66,8 @@ module "management_vpc" {
 ##############################################################################
 
 module "tg_gateway_connection" {
-  source                    = "git::https://github.com/terraform-ibm-modules/terraform-ibm-transit-gateway.git?ref=v2.1.1"
+  source                    = "terraform-ibm-modules/transit-gateway/ibm"
+  version                   = "2.1.1"
   transit_gateway_name      = "${var.prefix}-tg"
   region                    = var.region
   global_routing            = false