[REVIEW][OPS] gpuCI Script Updates

[mike-wendt]

Overview

First step before "Project Flash" to improve gpuCI scripts and allow for use of different node types for CPU builds. Post "Project Flash" there will be another round of improvements and updates with the goal to make these scripts easier to maintain.

Changes

• Consolidates some of the CPU gpuCI scripts, reducing number of scripts to maintain
• Standardizes naming of the upload script to upload.sh
• Changes logging to use gpuci_logger where practical
• Updates comments and documentation where necessary
• Enables gpuCI to override environment variables based on node types
• Reorders upload script to save ~5 mins or more in testing time

[GPUtester]

Please update the changelog in order to start CI tests.

View the gpuCI docs here.

[mike-wendt]

Once tests pass will merge in morning

[mike-wendt]

With rapidsai/gpuci-build-environment#135 and rapidsai/gpuci-tools#12 merged, A100 tests should pass now

[mike-wendt]

Incoming fix for the conda builds, waiting on gpuci-tools to build again

[mike-wendt]

Woot A100 CUDA 11 tests work with all of the above patches. Running a test with a branch build to verify uploads work off of this branch. That combined with these tests can merge this PR

[mike-wendt]

Will merge first thing in the morning after final ops review

[mike-wendt]

Successful branch test and two survived 504 errors during upload https://gpuci.gpuopenanalytics.com/job/rapidsai/job/gpuci/job/cudf/job/prb/job/cudf-cpu-build/69425/console

May want to retry 3 times instead. Will get feedback before submitting a change

[ajschmidt8]

two small things, otherwise 👍

[mike-wendt]

Cancelled tests, admin merging due to recent changes changes being a config tweak, doc update, and duplicate code removal