Update ingress class to ingress-private from private

[satyamz]

What:

Update ingress class to ingress-private from private

Why:

We are migrating to upstream ingress controller. We have installed upstream ingress controller to all clusters. New class name for private ingress controller is ingress-private

Issue:

https://github.com/stellar/ops/issues/3412

[satyamz]

@jayz22 Thanks for the review. Can you please merge this PR?

[jayz22]

The default command option also needs to be changed:

In Programe.fs

    [<Option("ingress-class",
             HelpText = "Value for kubernetes.io/ingress.class, on ingress",
             Required = false,
             Default = "private")>]

and

                  logLevels = ll
                  ingressClass = "private"
                  ingressInternalDomain = "local"

[jayz22]

The default command option also needs to be changed:

In Programe.fs

    [<Option("ingress-class",
             HelpText = "Value for kubernetes.io/ingress.class, on ingress",
             Required = false,
             Default = "private")>]

and

                  logLevels = ll
                  ingressClass = "private"
                  ingressInternalDomain = "local"

All the stellar-supercluster Jenkins missions uses default class name so if you update it they will work fine.