SLING-4113 - Importing resources triggers spurios publish events when
missing parent folders are created

Ensure that ImportRepositoryContentAction.createParents set the import
modification property so its changes are ignored.

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1634904 13f79535-47bb-0310-9956-ffa450edef68
SLING-3781 - Fix unstable Eclipse-based tests

Tweak ContentImportTest.importFilesAndFoldersRespectsVltFilters so that
events generated by the initial publish are ignored when looking for
unexpected publishing operations.

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1634905 13f79535-47bb-0310-9956-ffa450edef68