[Libguestfs] server: Fix reading passwords interactively.

Richard W.M. Jones
2020-06-01T13:09:33Z

I had an idea that I would make an alternate version of this patch
where password=- always reads from /dev/tty.  But looking at the
source code of sudo that seems really complicated to do across all
platforms (and even if we only made it work on Linux).

Rich.

--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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