Version problem in Jenkins REEF

[JunhoeKim]

In latest version of REEF, a new configuration in client ON_JOB_SUBMITTED is updated. So when we try to customize DriverLauncher code in REEF. Jenkins fails to build.

[yunseong]

The main reason for this failure is our code depends on the REEF's latest SNAPSHOT. Whenever we need new features in REEF, we have to manually build REEF and include it to Jenkin's local repository.

It'd be great if we find an elegant way for Jenkins to use the latest version of REEF automatically.

[wynot12]

It looks that it has been resolved by @yunseong as we can see that Jenkins has successfully tested #1081.
Shall we close it?

[yunseong]

IMHO, we'd better find a way to rebuild REEF automatically somehow.

I think we can add another project to Jenkins, which tests & builds Cay periodically (e.g., daily), and there we can set the pre-built step to building the latest version of REEF (after git pull) in the project.

This way we can 1) prevent the regular build taking long to build REEF, and 2) display the build status.

Any thoughts?