# cf-promises --show-classes |grep -i suse

returns nothing. On previous releases, output similar to the following is
produced:

SUSE inventory,attribute_name=none,source=agent,hardclass
SuSE inventory,attribute_name=none,source=agent,hardclass
SuSE_42 inventory,attribute_name=none,source=agent,hardclass
SuSE_42_2 inventory,attribute_name=none,source=agent,hardclass
opensuse inventory,attribute_name=none,source=agent,hardclass
opensuse_42
inventory,attribute_name=none,source=agent,derived-from=sys.flavor,hardclass
opensuse_42_2 inventory,attribute_name=none,source=agent,hardclass
suse inventory,attribute_name=none,source=agent,hardclass
suse_derived source=promise,inventory,attribute_name=none