Do not discard previous options

Author: josevalim

lib/ecto/adapters/myxql.ex

@@ -231,7 +231,7 @@ defmodule Ecto.Adapters.MyXQL do
       Ecto.Adapters.SQL.raise_migration_pool_size_error()
     end
 
-    opts = [log: Keyword.get(opts, :log, false), timeout: :infinity]
+    opts = Keyword.put(opts, :timeout, :infinity)
 
     {:ok, result} =
       transaction(meta, opts, fn ->

lib/ecto/adapters/postgres.ex

@@ -209,7 +209,7 @@ defmodule Ecto.Adapters.Postgres do
       Ecto.Adapters.SQL.raise_migration_pool_size_error()
     end
 
-    opts = [log: Keyword.get(opts, :log, false), timeout: :infinity]
+    opts = Keyword.put(opts, :timeout, :infinity)
 
     {:ok, result} =
       transaction(meta, opts, fn ->

lib/ecto/adapters/tds.ex

@@ -284,7 +284,7 @@ defmodule Ecto.Adapters.Tds do
       Ecto.Adapters.SQL.raise_migration_pool_size_error()
     end
 
-    opts = [log: Keyword.get(opts, :log, false), timeout: :infinity]
+    opts = Keyword.put(opts, :timeout, :infinity)
 
     {:ok, result} =
       transaction(meta, opts, fn ->