cubicweb #1981680 authentication info retriever should be given a chance to cleanup data [resolved]

if it has returned some authentication info that has been proved to be erroneous, it should be warned about that

prioritynormal
typebug
done in3.13.8
load0.100
load left0.000
closed by#faec7589f742 [web auth] closes #1981680: authentication info retriever should be given a chance to cleanup data