Allow `ActiveStorage::Blob#service_url` to pass addition options to `service.url`.

Because there have some service needs more parameters for file URL:

https://www.alibabacloud.com/help/doc-detail/44687.htm

```rb
class AliyunService < Service
  def url(key, options = {})
    image_process = options[:oss_process] || "image/resize,w_800"
    "http://image-demo.oss-cn-hangzhou.aliyuncs.com/example.jpg?x-oss-process=#{image_process}"
  end
end
```

Use case:

```erb
<%= image_tag @user.avatar.service_url(oss_process: "image/resize,m_fill,h_100,w_100" %>
```

1 files changed, 20 insertions, 0 deletions

diff --git a/activestorage/test/models/blob_test.rb b/activestorage/test/models/blob_test.rb
index 664939dfa7..5cd2a94326 100644
--- a/activestorage/test/models/blob_test.rb
+++ b/activestorage/test/models/blob_test.rb
@@ -2,8 +2,11 @@
 
 require "test_helper"
 require "database/setup"
+require "active_support/testing/method_call_assertions"
 
 class ActiveStorage::BlobTest < ActiveSupport::TestCase
+  include ActiveSupport::Testing::MethodCallAssertions
+
   test "create after upload sets byte size and checksum" do
     data = "Hello world!"
     blob = create_blob data: data
@@ -82,6 +85,23 @@ class ActiveStorage::BlobTest < ActiveSupport::TestCase
     end
   end
 
+  test "urls allow for custom options" do
+    blob = create_blob(filename: "original.txt")
+
+    options = [
+      blob.key,
+      expires_in: blob.service.url_expires_in,
+      disposition: :inline,
+      content_type: blob.content_type,
+      filename: blob.filename,
+      thumb_size: "300x300",
+      thumb_mode: "crop"
+    ]
+    assert_called_with(blob.service, :url, options) do
+      blob.service_url(thumb_size: "300x300", thumb_mode: "crop")
+    end
+  end
+
   test "purge deletes file from external service" do
     blob = create_blob