Bootstrap logic along with BYO

[sabre1041]

This is the beginning of the culmination of the Helm Migration efforts. This PR contains:

• ArgoCD Chart
• Initialization script to deploy OpenShift GitOps and ArgoCD (ArgoCD is now deployed to a namespace called rfe-gitops)
• user-mgmt chart which is a superset of the existing oauth chart and adds creation of groups and bindings of permissions
• Chart for facilitating the bootstrap logic (Sets up SSH keys and RHSM portal details) and supports the general loading of content (such as raw manifests and secure values etc)
• Values file representing the byo overlay from the existing kustomize structure

To test:

1. Add your public/private key to the following locations:
   1. charts/bootstrap/files/ssh/image-builder-ssh-private-key
   2. charts/bootstrap/files/ssh/image-builder-ssh-public-key
2. Add RHSM details in the helm/testing/bootstrap/values.yaml file
3. Create a values file in helm/testing/bootstrap/globals.yaml with the following content to have ArgoCD target this branch for testing:

   global:
     git:
       url: https://github.com/sabre1041/rhel-edge-automation-arch.git
       ref: bootstrap

4. Deploy OpenShift GitOps and ArgoCD by running the initialization script at ./setup/init.sh
5. Bootstrap the environment

   helm upgrade -i -n rfe-gitops bootstrap charts/bootstrap/ -f helm/testing/bootstrap/values.yaml -f helm/testing/bootstrap/globals.yaml -f helm/testing/byo/byo.yaml

6. Verify
   1. RFE identity provider has been added enabling htpasswd authentication
   2. Applications deployed in ArgoCD instance in rfe-gitops namespace

There are still a few outstanding items, but this would be a HUGE milestone!