Fix multibyte character problem

Fixed problem that causes a UnicodeEncodeError when use multi-byte characters in the job.yml.

Change-Id: Ie715c827a794e73fae11cdca079ea80cfb8c280d
Add local-branch option

Change-Id: I5883992afc0875e2f464ff3f576b067f7d5b4ce8
Added rbenv wrapper

Change-Id: Iefab7b71b96998789a66b3e1ea03f28fbfc38391
Merge "Added rbenv wrapper"