Merge branch 'fix-remote-follow-from-ostatus-subscribe' into 'develop'

Fix remote follow from /ostatus_subscribe

Closes #1103

See merge request pleroma/pleroma!1472

test/support/http_request_mock.ex

@@ -940,6 +940,14 @@ defmodule HttpRequestMock do
     {:ok, %Tesla.Env{status: 404, body: ""}}
   end
 
+  def get("https://mstdn.jp/.well-known/webfinger?resource=acct:kpherox@mstdn.jp", _, _, _) do
+    {:ok,
+     %Tesla.Env{
+       status: 200,
+       body: File.read!("test/fixtures/tesla_mock/kpherox@mstdn.jp.xml")
+     }}
+  end
+
   def get(url, query, body, headers) do
     {:error,
      "Not implemented the mock response for get #{inspect(url)}, #{query}, #{inspect(body)}, #{