Default to comparing all attributes if no oo_id_attrs defined
Default to comparing all attributes if no oo_id_attrs defined

Since commit: "cache pickup: Avoid duplicates during cache pickup",
nfnl_ct_alloc_cache no longer properly fills the cache, as it doesn't
define oo_id_attrs so all items are considered duplicates.

Instead of adding a ~0 oo_id_attrs to ct_obj, this changes
nl_object_identical to default to comparing all attributes if
neither oo_id_attrs_get or oo_id_attrs are provided.

Signed-off-by: Thomas Graf <17c2d8920621522552b392f72d8fdb4d1e866b44@suug.ch>

tgraf/libnl,honsys/libnl,baloo/libnl,vyos/libnl3,dsahern/libnl,honsys/libnl,cfriedt/libnl,cyclops8456/libnl3,claudelee/libnl,karlhiramoto/libnl,honsys/libnl,houstar/libnl,cyclops8456/libnl3,greearb/libnl-ct,mshirley/libnl,tklauser/libnl,teto/libnl_old,cyclops8456/libnl3,UnicronNL/libnl3,houstar/libnl,HolyShitMan/libnl-1,claudelee/libnl,UnicronNL/libnl3,karlhiramoto/libnl,kolyshkin/libnl,greearb/libnl-ct,claudelee/libnl,mshirley/libnl,thom311/libnl,tgraf/libnl,mshirley/libnl,teto/libnl_old,kolyshkin/libnl,HolyShitMan/libnl-1,greearb/libnl-ct,claudelee/libnl,kolyshkin/libnl,HolyShitMan/libnl-1,UnicronNL/libnl3,tklauser/libnl,HolyShitMan/libnl-1,thom311/libnl,tklauser/libnl,cfriedt/libnl,cfriedt/libnl,mshirley/libnl,tgraf/libnl,dsahern/libnl,teto/libnl_old,baloo/libnl,karlhiramoto/libnl,congwang/libnl,congwang/libnl,teto/libnl_old,vyos/libnl3,dsahern/libnl,tklauser/libnl,baloo/libnl,tgraf/libnl,congwang/libnl,kolyshkin/libnl,baloo/libnl,houstar/libnl,honsys/libnl,cyclops8456/libnl3,dsahern/libnl,vyos/libnl3,UnicronNL/libnl3,karlhiramoto/libnl,cfriedt/libnl,vyos/libnl3,thom311/libnl,houstar/libnl,congwang/libnl