failed Pipeline #7439 triggered by Jérome Perrin

knowledge_pad: ignore feedparser.NonXMLContentType

When server replies with a non XML content type feeparser attempt to
parse anyway, but set the bozo flag.

https://universal-feedparser.readthedocs.io/en/latest/#handling-incorrectly-declared-media-types

If parsing fail because the feed is not a valid RSS XML stream,
feedparser fail in other ways, so we can safely ignore this error.

This should repair recent failures with testFeedReaderGadget now that le
monde changed configuration on their website:

     $ curl -sD -  -o /dev/null https://www.lemonde.fr/rss/une.xml | grep Content-Type
     Content-Type: text/html;charset=UTF-8
.gitlab-ci.yml not found in this commit
Status Job ID Name
  External
passed ERP5.CodingStyleTest-TestRunner1

56:38

passed ERP5.PerformanceTest-TestRunner1

32:19

failed ERP5.UnitTest-TestRunner1

01:19:25