[FEATURE REQUEST] Epiphany on AKS module MVP

[mkyc]

Is your feature request related to a problem? Please describe.

There is need to prepare simplest possible Epiphany module to be able to install epiphany on top of AzBI and AzAKS modules.

Describe the solution you'd like

docker run azbi vms_count=2 init
docker run azbi plan
docker run azbi apply
docker run azks init
docker run azks plan
docker run azks apply
docker run epi postgres=1 init 
docker run epi plan
docker run epi apply

assumption in upper code is that default cluster configuration templated by epi module has zeros for all machines and 1 on repository machine. It means that by default epi module requires at least 1 machine to be available in state. By setting postgres=1 in epi init phase I in fact tell it that it needs to use 2 machines. Also init phase should be able to discover that there is AzAKS module applied and it should configure that it will use that created AKS cluster. If there is no AzAKS module already present it should fail.

All that means that after those 9 steps I should have Epiphany cluster with 1 repository machine, 1 postgresql machine and 3 nodes AKS cluster.

I think we can name that module m-classic-epiphany-on-aks

Describe alternatives you've considered

No.

Additional context

No.

[mkyc]

This task implies that there will be 3 modules eventually:

• m-classic-epiphany-on-aks (this task)
• m-classic-epiphany-on-eks
• m-classic-epiphany-on-prem

[sk4zuzu]

POC: https://github.com/sk4zuzu/m-classic-epiphany-on-aks/pull/1 👍😇

[mkyc]

I left first review. This PR is huge but very valuable! Good job @sk4zuzu 👍

[sk4zuzu]

Repository has been renamed and moved here https://github.com/epiphany-platform/m-generic-epiphany-on-aks.

[to-bar]

• Added support for running on Windows (under Git Bash)
• Tests OK (checked k8s dashboard, Keycloak, Kibana, pod statuses)
• During testing found and reported issue #1866 [Filebeat] [AKS/EKS] No logs from K8s apps in Elasticsearch