SLING-3586 - Publishing content fails if intermediate nodes are not
present in the repository

Since we sometimes ignore publish requests we can't rely on
getPublishedResources() to tell us what was published. Therefore we
simply skip this check when ensuring that parent resources are created.

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1630986 13f79535-47bb-0310-9956-ffa450edef68