Enabling management of subuid in ipa and nss for ldap users breaks rootless podman for local users

Issue

• After configuring /etc/nsswitch.conf to pull subuid and subgid ranges for ldap users from sssd, local users can no longer use rootless podman.

• After configuring subid: sss in /etc/nsswitch.conf, rootless podman no longer works for local users

• rootless podman gets error:
  ERRO[0000] cannot find UID/GID for user regularuser: cannot read subids - check rootless mode in man pages.
WARN[0000] Using rootless single mapping into the namespace. This might break some images. Check /etc/subuid and /etc/subgid for adding sub*ids if not using a network user