Migrate away from Docker Compose exclusively to k8s

All maintainers of outstanding repositories (see description) have migrated their development, test and CI/CD workflow processes to  Kubernetes, and obsoleted the use of docker-compose. Developer Portal containerisation standards updated to refer to K8s instead of Docker.

NCRA Outcomes: Removed docker-compose folder. Removed up, down, test, interactive, piplock jobs from the Makefile. Updated README file. MR! 104 is merged into master. Work on review comment by Matteo Di Carlo: https://gitlab.com/ska-telescope/tmc-prototype/-/merge_requests/104#note_409110317: Removing docker run is going on in tox-exploration branch. Removed docker from unit-test and lint Makefile jobs. Implemented tox based on Py37 as a testing environment. Removed integration tests and conftest file from all the tmc devices. (since these tests were not running in any stage). Link to git branch: https://gitlab.com/ska-telescope/tmc-prototype/-/merge_requests/107 ------------------------------------------------------------------------------------- CREAM Outcomes see the following 2 documents: CSP.LMC https://drive.google.com/file/d/1OwI5jWY6Co79Rcw4FxWUuEdXwbS1cBhb/view?usp=sharing WebJive https://docs.google.com/document/d/1n5SXs8zbKMWapxyKDu2fyJsVorO6Uv4oTPi9tIGXGKI/edit# ------------------------------------------------------------------------------------- Karoo Outcomes lmc-base-classes is migrated to, Kubernetes by removing the use of docker-compose in the CI pipeline and reworking the one test that required a running device, supporting SKA Software orchestration strategy and goals by migrating this repo and enabling successful migration of skampi, and other dependent repos. Buttons Outcomes: Docker-compose references have been removed in cdm-shared-library, observation-execution-tool and ska-project-data-model-library projects (referred to as CDM, OET and PDM respectively in the comments of AT2-544)