util,ostrich,scrooge,finagle,twitter-server: Update TravisCI configuration
util,ostrich,scrooge,finagle,twitter-server: Update TravisCI configuration

Problem/Solution

Add scala 2.12.1 version to TravisCI configurations.

RB_ID=906909

luciferous/finagle,mkhq/finagle,mkhq/finagle,koshelev/finagle,twitter/finagle,koshelev/finagle,mkhq/finagle,koshelev/finagle,mkhq/finagle,mkhq/finagle,twitter/finagle,mkhq/finagle,koshelev/finagle,luciferous/finagle,koshelev/finagle,luciferous/finagle,twitter/finagle,koshelev/finagle,twitter/finagle,luciferous/finagle,twitter/finagle,luciferous/finagle,luciferous/finagle