tstest/integration: don't require TestMake, stop leaking binaries in /tmp

Browse Source

Previously all tests shared their tailscale+tailscaled binaries in
system /tmp directories, which often leaked, and required TestMain to
clean up (which feature/taildrop didn't use).

This makes it use testing.T.TempDir for the binaries, but still only
builds them once and efficiently as possible depending on the OS
copies them around between each test's temp dir.

Updates #15812

Change-Id: I0e2585613f272c3d798a423b8ad1737f8916f527
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

...

This commit is contained in:

500 Internal Server Error

Gitea Version: 1.28.0+dev-477-g8b6ad49a5f