feat: Support Red Hat Cert Manager

closes: #303

Description of changes:

Adds new red_hat_cert_manager parameter to cp-shared and cp4a-app applications and sub-applications.
Adds conditional processing for adding either Red Hat Cert Manager or IBM Cert Manager depending on the value of the flag.

Output of argocd app list command or screenshot of the Argo CD Application synchronization window showing successful application of changes in this branch.

argocd app get cp4a-app --show-params
Name:               openshift-gitops/cp4a-app
Project:            default
Server:             https://kubernetes.default.svc
Namespace:          cp4a
URL:                https://openshift-gitops-server-openshift-gitops.apps.dncp4bacert.cp.fyre.ibm.com/applications/cp4a-app
Repo:               https://github.com/IBM/cloudpak-gitops
Target:             303-rh-cert
Path:               config/argocd-cloudpaks/cp4a
SyncWindow:         Sync Allowed
Sync Policy:        Automated (Prune)
Sync Status:        Synced to 303-rh-cert (1aa3778)
Health Status:      Healthy

oc get sub -A | grep cert
cert-manager-operator       openshift-cert-manager-operator                                                 openshift-cert-manager-operator   redhat-operators       stable-v1

NAME                                              VALUE
argocd_app_name                                   ${ARGOCD_APP_NAME}
argocd_app_namespace                              ${ARGOCD_APP_NAMESPACE}
metadata.argocd_app_namespace                     cp4a
red_hat_cert_manager                              true  <<<<<
repoURL                                           ${ARGOCD_APP_SOURCE_REPO_URL}
serviceaccount.argocd_application_controller      openshift-gitops-argocd-application-controller
spec.shared_configuration.sc_deployment_platform  OCP
storageclass.block                                rook-ceph-block
storageclass.bronze                               rook-cephfs
storageclass.gold                                 rook-cephfs
storageclass.silver                               rook-cephfs
targetRevision                                    ${ARGOCD_APP_SOURCE_TARGET_REVISION}

GROUP        KIND         NAMESPACE         NAME                       STATUS     HEALTH   HOOK     MESSAGE
batch        Job          openshift-gitops  cp4a-storage-classes       Succeeded           PreSync  job.batch/cp4a-storage-classes created
batch        Job          openshift-gitops  cp4a-adjust-prereq-config  Succeeded           PreSync  job.batch/cp4a-adjust-prereq-config created
argoproj.io  Application  openshift-gitops  cp4a-operators             Synced     Healthy           application.argoproj.io/cp4a-operators configured
argoproj.io  Application  openshift-gitops  cp4a-app                   Synced                       application.argoproj.io/cp4a-app configured
argoproj.io  Application  openshift-gitops  cp4a-resources             Synced     Healthy           application.argoproj.io/cp4a-resources configured

argocd app list
NAME                                  CLUSTER                         NAMESPACE         PROJECT               STATUS  HEALTH   SYNCPOLICY  CONDITIONS  REPO                                        PATH                                  TARGET
openshift-gitops/argo-app             https://kubernetes.default.svc  openshift-gitops  argocd-control-plane  Synced  Healthy  Auto-Prune  <none>      https://github.com/IBM/cloudpak-gitops.git  config/argocd                         HEAD
openshift-gitops/cp-shared-app        https://kubernetes.default.svc  ibm-cloudpaks     default               Synced  Healthy  Auto-Prune  <none>      https://github.com/IBM/cloudpak-gitops      config/argocd-cloudpaks/cp-shared     303-rh-cert
openshift-gitops/cp-shared-operators  https://kubernetes.default.svc  ibm-cloudpaks     default               Synced  Healthy  Auto-Prune  <none>      https://github.com/IBM/cloudpak-gitops      config/cloudpaks/cp-shared/operators  303-rh-cert
openshift-gitops/cp4a-app             https://kubernetes.default.svc  cp4a              default               Synced  Healthy  Auto-Prune  <none>      https://github.com/IBM/cloudpak-gitops      config/argocd-cloudpaks/cp4a          303-rh-cert
openshift-gitops/cp4a-operators       https://kubernetes.default.svc  cp4a              default               Synced  Healthy  Auto-Prune  <none>      https://github.com/IBM/cloudpak-gitops      config/cloudpaks/cp4a/operators       303-rh-cert
openshift-gitops/cp4a-resources       https://kubernetes.default.svc  cp4a              default               Synced  Healthy  Auto-Prune  <none>      https://github.com/IBM/cloudpak-gitops      config/cloudpaks/cp4a/resources       303-rh-cert

IBM / cloudpak-gitops

feat: Support Red Hat Cert Manager #305