Add repo name to "not found" errors

Retain repo name in the state of DBConnection.Ownership.Manager for the
sake of clearer errors.

Before: `** (DBConnection.OwnershipError) cannot find ownership process
for #PID<0.1128.0> ({Phoenix.LiveView,
MyAppWeb.FooLive, "lv:phx-GHKljxU3bpZfbx9j"})
using mode :manual`

After: `** (DBConnection.OwnershipError) cannot find ownership process
for #PID<0.1128.0> ({Phoenix.LiveView,
MyAppWeb.FooLive, "lv:phx-GHKljxU3bpZfbx9j"})
using mode :manual on repo MyApp.Repo`

Author: nathanl

lib/db_connection/ownership/manager.ex

@@ -107,7 +107,8 @@ defmodule DBConnection.Ownership.Manager do
        mode: mode,
        mode_ref: nil,
        ets: ets,
-       log: log
+       log: log,
+       repo: pool_opts[:repo]
      }}
   end
 
@@ -223,7 +224,7 @@ defmodule DBConnection.Ownership.Manager do
         {:noreply, state}
 
       :not_found when mode == :manual ->
-        not_found(from, mode)
+        not_found(from, mode, state.repo)
         {:noreply, state}
 
       :not_found ->
@@ -393,10 +394,10 @@ defmodule DBConnection.Ownership.Manager do
     caller
   end
 
-  defp not_found({pid, _} = from, mode) do
+  defp not_found({pid, _} = from, mode, repo) do
     msg = """
     cannot find ownership process for #{Util.inspect_pid(pid)}
-    using mode #{inspect(mode)}.
+    using mode #{inspect(mode)} on repo #{inspect(repo)}
 
     When using ownership, you must manage connections in one
     of the four ways: