Install the operator into an arbitrary namespace

[carolynvs]

Right now the kustomize files generated by the operator sdk hard code the namespace. Let's see if we can ideally make that configurable, so that if we made a helm chart from the kustomize output, the namespace could be set when it's installed.

It may make sense to generate a helm chart in this repo as well. We can then use helm to install the operator in a bundle, or with a helm chart variant for installing it on a cloud provider.

[VinozzZ]

related issue: #75

[SubZer0MS]

looking into this one

[carolynvs]

Thanks I've assigned the issue to you 👍

[SubZer0MS]

Making a note here:

1. Ability to install the operator using kustomize, and not a porter bundle.
2. The destination namespace for the porter operator is hard-coded to "porter-operator-system" and in either case (installing via porter or directly with kustomize) the user should be able to install into their desired namespace.