tools: toolchain: improve sudo support
tools: toolchain: improve sudo support

Bind-mount /etc/passwd and /etc/group so sudo doesn't complain, and
support sudo without password or tty.

scylladb/scylla,scylladb/scylla,avikivity/scylla,scylladb/scylla,scylladb/scylla,avikivity/scylla,avikivity/scylla