923792 - Errata queries during sync don't properly limit returned data
Merge pull request #152 from jwmatthews/jmatthews_errata_mem_fix

923792 - Errata queries during sync don't properly limit returned data
923448 - made the changelog and filelist metadata migration more robust in terms of handling non-utf8 text encoding
improvements based on review
Merge branch 'mhrivnak-923448'