Specifying Kubernetes and OpenShift version

[kadel]

Kubernetes version and OpenShift version in entrypoint.sh is defined in a different way.
For Kubernetes for some reason version is saved in k8s-release file. And for OpenShift it is hard coded using commit hash.

json-schema-generator/scripts/entrypoint.sh

Line 17 in b0f59ac

K8S_OPENAPI_URL=https://raw.githubusercontent.com/kubernetes/kubernetes/$(curl https://raw.githubusercontent.com/kedgeproject/json-schema-generator/master/scripts/k8s-release)/api/openapi-spec/swagger.json

json-schema-generator/scripts/entrypoint.sh

Line 18 in b0f59ac

OS_OPENAPI_URL=https://raw.githubusercontent.com/openshift/origin/1252cce6daeca1b6cc0fd90b1bde5dcdc9a0853b/api/swagger-spec/oapi-v1.json

There should be the common way how versions are defined, so it is easy to change it or test new versions. env variables with default values are a good proven way to do it.