[split] bump version of util to 6.3.8 in sbt
[split] bump version of util to 6.3.8 in sbt

RB_ID=165687
TBR=true
NO-QUEUE=true

wuqiangxjtu/util,slackhappy/util,Jiri-Kremser/util,luciferous/util,wuqiangxjtu/util,LitmusHealth/twitter-utils,cogitate/twitter-util-uuid,tdyas/util,cogitate/twitter-util-uuid,mosesn/util,tdyas/util,wuqiangxjtu/util,hydro2k/util,travisbrown/util,hydro2k/util,hydro2k/util,luciferous/util,BuoyantIO/twitter-util,RUNDSP/util,folone/util,stremlenye/util,RUNDSP/util,tdyas/util,wuqiangxjtu/util,Jiri-Kremser/util,LitmusHealth/twitter-utils,slackhappy/util,slackhappy/util,tenghuihua/util,luciferous/util,BuoyantIO/twitter-util,LitmusHealth/twitter-utils,edombowsky/util,edombowsky/util,RUNDSP/util,Jiri-Kremser/util,travisbrown/util,cogitate/twitter-util-uuid,folone/util,twitter/util,twitter/util,twitter/util,stremlenye/util,BuoyantIO/twitter-util,nkhuyu/util,nkhuyu/util,travisbrown/util,edombowsky/util,LitmusHealth/twitter-utils,BuoyantIO/twitter-util,mosesn/util,cogitate/twitter-util-uuid,mosesn/util,edombowsky/util,folone/util,folone/util,Jiri-Kremser/util,nkhuyu/util,stremlenye/util,slackhappy/util,RUNDSP/util,nkhuyu/util,hydro2k/util,travisbrown/util,tenghuihua/util,tenghuihua/util,tenghuihua/util,stremlenye/util,tdyas/util,luciferous/util