Sudo auth issue in test-suite

[dmnks]

Seems like we have another (random?) test failure:

## ---------------------- ##
## Detailed failed tests. ##
## ---------------------- ##

#                             -*- compilation -*-
312. rpmi.at:1173: testing rpm -i relocatable package 3 ...
/rpmi.at:1180:
runroot_user \
  rpm -U --prefix \$PWD/root --dbpath \$PWD/rpmdb \
  /build/RPMS/noarch/rootfs-1.0-1.noarch.rpm

--- /dev/null	2024-10-14 15:06:38.808142963 +0000
+++ /srv/rpmtests.dir/at-groups/312/stderr	2024-10-14 15:07:16.196070787 +0000
@@ -0,0 +1,2 @@
+sudo: PAM account management error: Authentication service cannot retrieve authentication info
+sudo: a password is required
/rpmi.at:1180: exit code was 1, expected 0
312. rpmi.at:1173: 312. rpm -i relocatable package 3 (rpmi.at:1173): FAILED (rpmi.at:1180)

Full log: https://github.com/ffesti/rpm/actions/runs/11330220300/job/31507550988

[dmnks]

Just noting here that the runuser command might be better than sudo for our use case here (we always run the test scripts as root by default), thanks @pmatilai for the hint 😄