* refactor given and when steps in webdavproperties context
* change the status code in tests as the when step sets the response now
* correct the status code check
* only save response
* use getResponseXml to get xml response object
* fix isEtagValid method
* rename step def methods
* make stricter checks
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Co-authored-by: Saw-jan <saw.jan.grg3e@gmail.com>