Test Beta Buildfleets in Contracts Pipeline

Change Description

From AUTO-461 and auto-eks-buildfleet build 993, a number of our docker containers are failing to build. Most of them appear to be failing due to get_pip.py being deprecated for Python 2 installations of pip, but we are finding some other bugs introduced, as well.

This pull request points the CI system at two new beta fleets we created, automation-eks-eos-builder-beta-fleet and automation-eks-eos-tester-beta-fleet, to test that the CI code still works with the upgrades. This pull request will NOT be merged.

auto-eks-buildfleet
- Pull Request 177 - buildkite-base
- Pull Request 178 - buildkite-eks-ecr-builder
- Pull Request 180 - Fix AWS CLI for pre-command Hook in buildkite-eks-ecr-builder Docker Image
- Pull Request 181 - Create Python 3 Beta Fleets for the EOSIO Builds and Tests
- Pull Request 182 - upgrade to python3 and awscli2 for terraform buildfleet
- Pull Request 183 - Terraform doesn't require awscli.
- Pull Request 184 - Deploy Buildfleet Upgrades to Production
eos
- Pull Request 10002 - eos:develop
- Pull Request 10003 - eos:release/2.1.x
- Pull Request 10004 - eos:release/2.0.x
- Pull Request 10005 - eos:release/1.8.x
eosio.cdt
- Pull Request 1049 - eosio.cdt:develop
- Pull Request 1050 - eosio.cdt:release/1.8.x
- Pull Request 1051 - eosio.cdt:release/1.7.x
eosio.contracts
- Pull Request 555 - eosio.contracts:develop
- Pull Request 556 - eosio.contracts:release/1.9.x
- Pull Request 557 - eosio.contracts:release/1.8.x
eos-vm
- Pull Request 200 - eos-vm:develop
- Pull Request 201 - eos-vm:eosio
- Pull Request 202 - eos-vm:eosio-2.0.x

Deployment Changes

[ ] Deployment Changes None.

API Changes

[ ] API Changes None.

Documentation Additions

[ ] Documentation Additions None.

EOSIO / eosio.contracts