update database test to use testify (#12532)

config/database_test.go

@@ -516,7 +516,7 @@ func TestDatabaseStoreSet(t *testing.T) {
 		select {
 		case <-called:
 		case <-time.After(5 * time.Second):
-			t.Fatal("callback should have been called when config written")
+			require.Fail(t, "callback should have been called when config written")
 		}
 	})
 }
@@ -757,7 +757,7 @@ func TestDatabaseStoreLoad(t *testing.T) {
 		select {
 		case <-called:
 		case <-time.After(5 * time.Second):
-			t.Fatal("callback should have been called when config loaded")
+			require.Fail(t, "callback should have been called when config loaded")
 		}
 	})
 }