Change queue name for job cancellations to job deletions for upcoming OMOTES release 0.0.9

[lfse-slafleur]

The queue called "job_cancellations" will be called "job_deletions" and use the JobDelete message instead of the JobCancel message.
So we are replacing one queue with another queue. Functionality of job_deletions will supersede job_cancellations. It will not only cancel the job, but also delete any job references in OMOTES as well as clean up any timeseries data.

[lfse-slafleur]

Python equivalent PR: Project-OMOTES/omotes-sdk-python#95