Execute ArgoCD E2E tests as part of 1.8.5 release.

Test Steps:

1. Clone https://gitlab.cee.redhat.com/gitops/gitops-components-automated-testing 
2. Checkout to the master branch
3. Run $ make prepare-operator after setting QUAY_USER and IIB_ID
4. Once the catalog source is available, install the operator from operator hub
5. Checkout to the argocd-e2e-enhancement branch
6. Set the ArgoCD version consumed by the operator and run the make target  
   1. $ export ARGOCD_VERSION=''
   2. $ make argocd-e2e-tests

Acceptance Criteria:

• Highest and lowest versions of supported OCP versions are covered 
• All the tests have been executed 
• Results have been logged