FrameCompleteHandler doesn't set Job finished

[splhack]

Describe the bug

FrameCompleteHandler didsn't set Job finished even though all frames were set succeeded.

It is really rare but happened a few times out of many jobs.

The last frame state was set as SUCCEEDED, actually cuegui showed all frames were succeeded.

Probably jobManager.isJobComplete was failed or jobManagerSupport.queueShutdownJob was failed but Cuebot log didn't show anything special (or I missed something)

https://github.com/AcademySoftwareFoundation/OpenCue/blob/master/cuebot/src/main/java/com/imageworks/spcue/dispatcher/FrameCompleteHandler.java#L261

To Reproduce
didn't find any way to repro

Expected behavior
Cuebot should set Job finished when all frames were finished

Version Number
0.13 + my PRs