[PATCH] testsuite fix: timezone: failing due to permissions in cross testing

[Florian Weimer]

* Joseph Myers:

> On Tue, 18 Dec 2018, Florian Weimer wrote:
>
>> There are also some xtests that require root privileges, such as
>> nptl/tst-setuid1.  Building and testing as root is supported (but
>
> That looks like it ought to become a test using user namespaces (and so 
> not an xtest).

Can an unprivileged user namespace really be used to get a working
setuid?  The setup code in support_become_root/setup_uid_gid_mapping
does not provide that.

Thanks,
Florian