nm-in-container: run with "--no-hosts" to have a plain /etc/hosts in the container

The bind mount interferes with running certain CI tests that want to
change /etc/hosts.

tools/nm-in-container/nm-in-container

@@ -579,6 +579,7 @@ do_run() {
         podman run --privileged \
             --name "$CONTAINER_NAME_NAME" \
             --dns=none \
+            --no-hosts \
             -d \
             -v "$BASEDIR_NM:$BASEDIR_NM" \
             "${BIND_NM_CI[@]}" \