Sends calendar-query requests without {DAV:}allprop / {DAV:propname} / {DAV:prop}

[jelmer]

Bloben appears to send calendar-query requests without specifying what sort of properties it desires. As far as I can tell, this is allowed by the RFC but it isn't entirely clear to me what the expected behaviour is. It says that calendar-query mostly behaves like propfind, and propfind specifies that "an empty body" implies {DAV:}allprop.

<c:calendar-query xmlns:c="urn:ietf:params:xml:ns:caldav" xmlns:cs="http://calendarserver.org/ns/" xmlns:ca="http://apple.com/ns/ical/" xmlns:d="DAV:">
  <c:filter>
    <c:comp-filter name="VCALENDAR"/>
  </c:filter>
</c:calendar-query>