Support for custom rules

[gareda]

Description

Add the ability to configure custom rules for WAF policies.

Potential Terraform Configuration

module "application_gateway_firewall_policy" {
  source              = "aztfm/application-gateway-firewall-policy/azurerm"
  version             = ">=1.1.0"
  ...
  custom_rules = [{
    name      = ""
    priority  = 10
    rule_type = ""
    action    = "Allow"
    match_conditions = [{
      operator           = ""
      negation_condition = false
      match_values       = [""]
      match_variables = [{
        variable_name = "RemoteAddr"
      }]
    }]
  }]
}

References

• https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/web_application_firewall_policy#custom_rules
• https://learn.microsoft.com/en-us/azure/web-application-firewall/ag/custom-waf-rules-overview