feat: Allow multiple listener rule condition blocks (terraform-aws-modules#359)

Author: trevorrea

examples/complete-alb/main.tf

@@ -248,6 +248,9 @@ module "alb" {
  query_string = {
  key = "weighted"
  value = "true"
+ },
+ path_pattern = {
+ values = ["/some/path"]
  }
  }]
  }

main.tf

@@ -360,7 +360,7 @@ resource "aws_lb_listener_rule" "this" {
  }
 
  dynamic "condition" {
- for_each = try(each.value.conditions, [])
+ for_each = [for condition in each.value.conditions : condition if contains(keys(condition), "host_header")]
 
  content {
  dynamic "host_header" {
@@ -370,7 +370,13 @@ resource "aws_lb_listener_rule" "this" {
  values = host_header.value.values
  }
  }
+ }
+ }
+
+ dynamic "condition" {
+ for_each = [for condition in each.value.conditions : condition if contains(keys(condition), "http_header")]
 
+ content {
  dynamic "http_header" {
  for_each = try([condition.value.http_header], [])
 
@@ -379,23 +385,41 @@ resource "aws_lb_listener_rule" "this" {
  values = http_header.value.values
  }
  }
+ }
+ }
 
+ dynamic "condition" {
+ for_each = [for condition in each.value.conditions : condition if contains(keys(condition), "http_request_method")]
+
+ content {
  dynamic "http_request_method" {
  for_each = try([condition.value.http_request_method], [])
 
  content {
  values = http_request_method.value.values
  }
  }
+ }
+ }
 
+ dynamic "condition" {
+ for_each = [for condition in each.value.conditions : condition if contains(keys(condition), "path_pattern")]
+
+ content {
  dynamic "path_pattern" {
  for_each = try([condition.value.path_pattern], [])
 
  content {
  values = path_pattern.value.values
  }
  }
+ }
+ }
+
+ dynamic "condition" {
+ for_each = [for condition in each.value.conditions : condition if contains(keys(condition), "query_string")]
 
+ content {
  dynamic "query_string" {
  for_each = try([condition.value.query_string], [])
 
@@ -404,7 +428,13 @@ resource "aws_lb_listener_rule" "this" {
  value = query_string.value.value
  }
  }
+ }
+ }
 
+ dynamic "condition" {
+ for_each = [for condition in each.value.conditions : condition if contains(keys(condition), "source_ip")]
+
+ content {
  dynamic "source_ip" {
  for_each = try([condition.value.source_ip], [])