tree da18635c49629247bbaa1e8059891eb9760a53c9
parent d110239668954225fc9dc557343ae6cad19f3960
author Hugo Arès <hugo.ares@ericsson.com> 1499277869 -0400
committer Hugo Arès <hugo.ares@ericsson.com> 1499278023 -0400

Remove usage of java.util.Optional

Gerrit 2.13 uses java 7 so replace java optional by guava one. This
commit needs to be reverted when merging up to 2.14.

Change-Id: Iafed1431ea9aaa85d0441473d03d0ab0dc0cefd0