cmd/dist: return dropped tests from misc/cgo/test

cmd/dist: return dropped tests from misc/cgo/test

In a previous change to cmd/dist/test.go to fix some pie
testcases, a few other tests were incorrectly dropped.
This returns the testcases that shouldn't have been removed.

Fixes #22708

Change-Id: I2f735f4fd3a378f0f45d12a99768638aeb4787c7
Reviewed-on: https://go-review.googlesource.com/77650
Run-TryBot: Russ Cox <rsc@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>