Argo Rollouts configuration ConfigMap is not updated to latest value of OpenShiftRolloutPlugin

[jgwest]

Depends on fix to #22

At present, if the value of the OpenShiftRolloutPlugin URL changes, for example, because we are shipping a new version of the plugin, it appears the ArgoRollouts ConfigMap will not be updated.

reconcileConfigMap contains this block of code:

	for _, plugin := range actualTrafficRouterPlugins {
		if plugin.Name == OpenShiftRolloutPluginName {
			// Openshift Route Plugin already present, nothing to do
			return nil
		}
	}

This block of code will exit the function if the plugin already exists, regardless of whether the URL matches the expected value.

Fix Criteria:

• If the ConfigMap already exists, and it already contains Plugin URL, but the plugin URL is different, the ConfigMap should be updated to point to the new plugin URL
• Unit/E2E test to verify

[jgwest]

Red Hat External issue tracker: https://issues.redhat.com/browse/GITOPS-4113