Add support for non-OpenShift K8s to managed-gitops, testing via k3d #3914

Job	Run time
Ensure Go modules synchronicity	28s
Run db-migration tests	1m 55s
Ensure there are no duplicate package imports	2m 59s
Ensure that code is gofmt-ed	25s
Ensure that code passes gosec and golint	5m 10s
Ensure that manifests are up-to-date	57s
Check mocks generated are up-to-date.	2m 35s
Run unit tests for Go packages	8m 11s
Check if migration schema matches with super schema.	1m 48s
Check if migrations work as expected when applied to most recent two migrations.	1m 57s
	26m 25s

Provide feedback