Allowing LuceneCatalog addMetadata and addReferences to retrieve product from index to cache, if not found in cache already, instead of throwing exception (OODT-551 and OODT-557)

git-svn-id: https://svn.apache.org/repos/asf/oodt/trunk@1441917 13f79535-47bb-0310-9956-ffa450edef68