cubicweb-elasticsearch #17079907 use consistent set of attributes to index, stop relying on cw_attr_cache [validation pending]

For optimization sake, just make sure the original rset fetches everyting or use complete=True but relying on cw_attr_cache will cause very obscure bugs

priorityimportant
typeenhancement
done in0.6.0
load0.250
load left0.000
closed by#a9a0b699f3da attr indexation should not depend on its presence in cw_attr_cache
patchattr indexation should not depend on its presence in cw_attr_cache [applied]