When running ipa-adtrust-install, the NetBIOS name is set. However, after installation, IPA provides no means to display installed NetBIOS name. The only option to find out it via ldapsearch for ipaNTFlatName attribute:
$ ldapsearch -Y GSSAPI '(ipaNTFlatName=*)' ... ipaNTFlatName: NETBIOS ...
ipa trustconfig-show
shows netbios name
Metadata Update from @lryznaro: - Issue assigned to someone - Issue set to the milestone: 0.0 NEEDS_TRIAGE