[FEA] Update ops-utils to support benchmark jobs

[rlratzel]

The new benchmark jobs will have the ability to run on either the latest commits (default), or commits from a prior date. There are several small utilities that will help with setting up the environment with the packages and sources to reproduce the state of RAPIDS on a specific date in the past, which can also be generally useful outside of benchmark jobs.

Update ops-utils which these utils so other projects can potentially use them. ops-utils is also a good place in general for having these utils for the benchmark project, so it's really no additional work.

[rlratzel]

PR submitted: https://github.com/rapidsai/ops-utils/pull/11

[rlratzel]

PR merged