Merged revision(s) 1623308 from lucene/dev/trunk:
SOLR-6489: Disable Morphlines-Cell tests, because Update to Tika 1.6 (SOLR-6488) broke them

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1623309 13f79535-47bb-0310-9956-ffa450edef68