[#eng-3373] Bump ES to 0.20.2
[#eng-3373] Bump ES to 0.20.2

whitefoxx/elasticsearch-jetty,sonian/elasticsearch-jetty,paul-e-cooley/elasticsearch-jetty,paul-e-cooley/elasticsearch-jetty,JoeyJiao/elasticsearch-jetty,sonian/elasticsearch-jetty,JoeyJiao/elasticsearch-jetty,whitefoxx/elasticsearch-jetty,tmayfield/elasticsearch-jetty,tmayfield/elasticsearch-jetty