artifactapi module: support mirrorlist on rpm/apk(alpine) remotes

Expose the provider v0.5.0 mirrorlist field through the config module so
rpm and alpine(apk) remotes can declare extra upstream mirror base URLs
(load-balanced with failover across base_url + mirrorlist).

- remote_rpm / remote_alpine object vars gain mirrorlist = optional(list(string), [])
- pass mirrorlist through to the corresponding remote resources
- bump artifactapi provider constraint to ~> 0.5

Additive and optional; no real remote config changes (deferred follow-up).

modules/artifactapi/main.tf

@@ -9,6 +9,7 @@ resource "artifactapi_remote_alpine" "this" {
   immutable_patterns = each.value.immutable_patterns
   mutable_patterns   = each.value.mutable_patterns
   stale_on_error     = each.value.stale_on_error
+  mirrorlist         = each.value.mirrorlist
 }
 
 resource "artifactapi_remote_docker" "this" {
@@ -74,6 +75,7 @@ resource "artifactapi_remote_rpm" "this" {
   immutable_patterns = each.value.immutable_patterns
   mutable_patterns   = each.value.mutable_patterns
   stale_on_error     = each.value.stale_on_error
+  mirrorlist         = each.value.mirrorlist
 }
 
 resource "artifactapi_remote_pypi" "this" {

modules/artifactapi/variables.tf

@@ -8,6 +8,7 @@ variable "remote_alpine" {
     immutable_patterns = optional(list(string), [])
     mutable_patterns   = optional(list(string), [])
     stale_on_error     = optional(bool, true)
+    mirrorlist         = optional(list(string), [])
   }))
   default = {}
 }
@@ -78,6 +79,7 @@ variable "remote_rpm" {
     immutable_patterns = optional(list(string), [])
     mutable_patterns   = optional(list(string), [])
     stale_on_error     = optional(bool, true)
+    mirrorlist         = optional(list(string), [])
   }))
   default = {}
 }

modules/artifactapi/versions.tf

@@ -3,7 +3,7 @@ terraform {
   required_providers {
     artifactapi = {
       source  = "artifactapi.k8s.syd1.au.unkin.net/terraform-unkin/artifactapi"
-      version = "0.2.0"
+      version = "~> 0.5"
     }
   }
 }