Add edition to make mysql and pg examples work

Author: feng-zhe

cloud_sql/mysql_instance_customer_managed_cas_ca/main.tf

@@ -93,6 +93,7 @@ resource "google_sql_database_instance" "default" {
   region           = "asia-northeast1"
   database_version = "MYSQL_8_4"
   settings {
+    edition = "ENTERPRISE"
     tier = "db-f1-micro"
     ip_configuration {
       # The following server CA mode lets the instance use customer-managed CAS CA to issue server certificates.

cloud_sql/mysql_instance_google_managed_cas_ca/main.tf

@@ -20,6 +20,7 @@ resource "google_sql_database_instance" "default" {
   region           = "asia-northeast1"
   database_version = "MYSQL_8_4"
   settings {
+    edition = "ENTERPRISE"
     tier = "db-f1-micro"
     ip_configuration {
       # The following server CA mode lets the instance use Google-managed CAS CA to issue server certificates.

cloud_sql/postgres_instance_customer_managed_cas_ca/main.tf

@@ -93,6 +93,7 @@ resource "google_sql_database_instance" "default" {
   region           = "asia-northeast1"
   database_version = "POSTGRES_17"
   settings {
+    edition = "ENTERPRISE"
     tier = "db-f1-micro"
     ip_configuration {
       # The following server CA mode lets the instance use customer-managed CAS CA to issue server certificates.

cloud_sql/postgres_instance_google_managed_cas_ca/main.tf

@@ -20,6 +20,7 @@ resource "google_sql_database_instance" "default" {
   region           = "asia-northeast1"
   database_version = "POSTGRES_17"
   settings {
+    edition = "ENTERPRISE"
     tier = "db-f1-micro"
     ip_configuration {
       # The following server CA mode lets the instance use Google-managed CAS CA to issue server certificates.