create build-workflow-cli-installer-darwin and build-workflow-cli-installer-linux jobs

[bacongobbler]

This way we can start a job which will create self-installing packages, much like what we did for the deis v1 client and deisctl release process. Alternatively, if we can just copy over the existing jobs and change the repository target then we're golden.

See https://ci.deis.io/job/build-deis-cli-installer-darwin/
See https://ci.deis.io/job/build-deis-cli-installer-linux/

[sgoings]

Do we actually need it to be two jobs?

[bacongobbler]

If we can do it in one job then that works for me. IIRC the jobs needed to be separated so each one could run on the specific OS' machine (OSX slave for installer-darwin and ubuntu for installer-linux).

[Cryptophobia]

This issue was moved to teamhephy/jenkins-jobs#27