[dev.typeparams] cmd/go: include new internal packages in TestNewReleaseRebuildsStalePackagesInGOPATH
CL 328336 introduced two new packages that the runtime and other
low-level packages depend on. Include them as targets to copy in this
test with other such packages.
Fixes the dev.typeparams longtest builders.
Change-Id: Ia886f0264962a68acd06ebca002eef8515f06487
Reviewed-on: https://go-review.googlesource.com/c/go/+/329251
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>