[split] bump util to 6.3.6-SNAPSHOT
[split] bump util to 6.3.6-SNAPSHOT

RB_ID=152226
TBR=true

cogitate/twitter-ostrich-uuid,twitter/ostrich,hydro2k/ostrich,travisbrown/ostrich,twitter/ostrich,yeghishe/ostrich,hydro2k/ostrich,travisbrown/ostrich,twitter/ostrich,twitter/ostrich,hydro2k/ostrich,travisbrown/ostrich,hydro2k/ostrich,yonglehou/ostrich,yeghishe/ostrich,cogitate/twitter-ostrich-uuid,travisbrown/ostrich,hydro2k/ostrich,yonglehou/ostrich,cogitate/twitter-ostrich-uuid,yonglehou/ostrich,cogitate/twitter-ostrich-uuid,yonglehou/ostrich,yeghishe/ostrich,yonglehou/ostrich,travisbrown/ostrich,cogitate/twitter-ostrich-uuid,yeghishe/ostrich,twitter/ostrich,yeghishe/ostrich