* run oidcPeriodicFunc for each namespace id store
* remove unused noNamespace var
* properly check for errors getting namespace
not sure why I decided to ignore the NoNamespace error before
or not log the unexpected error, that doesn't make sense.
* add changelog
* improve changelog
* remove too many namespace warning for OIDC rotations
this was already in the ENT PR, I had already checked that the file didn't exist on CE before but somehow I missed it.