Make wal the default for sqlite resource pieces

Fixes broken test as a result.

storage/sqlite/sqlite-storage_test.go

@@ -27,6 +27,9 @@ func newConnsAndProv(t *testing.T, opts NewPoolOpts) (ConnPool, *provider) {
 	// sqlitex.Pool.Close doesn't like being called more than once. Let it slide for now.
 	//t.Cleanup(func() { pool.Close() })
 	qt.Assert(t, initPoolDatabase(pool, InitDbOpts{}), qt.IsNil)
+	if !opts.Memory && opts.SetJournalMode == "" {
+		opts.SetJournalMode = "wal"
+	}
 	qt.Assert(t, initPoolConns(nil, pool, opts.InitConnOpts), qt.IsNil)
 	prov, err := NewProvider(pool, ProviderOpts{BatchWrites: pool.NumConns() > 1})
 	require.NoError(t, err)