Test ArgoCD UI Login as part of  ROSA validation

Test Steps:

There are three approaches

I.

Try the logging in method by following Visualize your applications via the Argo CD UI section in https://spaces.redhat.com/pages/viewpage.action?spaceKey=GITOPS&title=KAM+and+DevConsole+end+to+end+Tests 

II.

1. Install GitOps operator on your cluster
2. Navigate to Networking -> Routes in openshift-gitops project, click on the link that takes you to the ArgoCD UI page
3. Log In Via Openshift

III.

1. Remove dex configuration from ArgoCD CR and add extraConfig

$ oc -n openshift-gitops patch argocd openshift-gitops --type='json' -p='[{ "op": "add", "path": "/spec/extraConfig", "value":{ "oidc.tls.insecure.skip.verify": "true" } }, { "op": "add", "path": "/spec/sso", "value": { "keycloak": { "rootCA": "---BEGIN---END---" }, "provider": "keycloak" } }]'

2. Restart argocd server pod

$ oc rollout restart deployment.apps/openshift-gitops-server -n openshift-gitops

3. Wait for keycloak-1-deploy pod in openshift-gitops namespace to be Completed

4. Navigate to Networking -> Routes in openshift-gitops project and click on the link that takes you to the ArgoCD UI page

5. LOG IN VIA KEYCLOAK, Log in with openshift and follow the instructions

Acceptance Criteria:

• Login is tested with all three approaches 
• Highest and lowest versions of supported OCP versions are covered