Add scripts for Centos CI

[evidolob]

What does this PR do?

Add scripts for Centos CI, for now it is only master, nightly and release scripts.
Note that https://ci.centos.org/view/Devtools/ will publish docker images on quay.io:

• che-theia-dev - https://quay.io/repository/eclipse/che-theia-dev?tag=latest&tab=tags
• che-theia - https://quay.io/repository/eclipse/che-theia?tag=latest&tab=tags
• eclipse/che-theia-endpoint-runtime-binary - https://quay.io/repository/eclipse/che-theia-endpoint-runtime-binary?tab=tags

What issues does this PR fix or reference?

eclipse-che/che#14849

[benoitf]

Hello, why nightly while we have next ?

[evidolob]

It is only CI job name, docker image tag will be next

[che-bot]

✅ E2E Happy path tests succeed 🎉

See Details

• Jenkins job

• logs and configs

• Happy path tests DevFile

• images:

name	link
che-theia	docker.io/maxura/che-theia:583
che-theia-endpoint-runtime-binary	docker.io/maxura/che-theia-endpoint-runtime-binary:583

Tested with Eclipse Che Single User on K8S (minikube v1.1.1)

[benoitf]

Can we update the name of endpoint binary while moving to quay.io

eclipse/che-theia-endpoint-runtime-binary looks too long

[evidolob]

@benoitf I will look on rename a bit later

[benoitf]

I saw it now but please also move all these ci scripts to a .ci folder to not have tons of unwanted files listed by default

as on https://github.com/redhat-developer/rh-che/tree/master/.ci