Associate Rollups to events when reconcile fails

[nvandanapu]

In order to give more visibility and surface errors, we should create and associate events with RollingUpgrade objects in cases of warning/errors.
In the following rollup, we can see that it errored out. But to see the actual reason, we have to check the controller logs, filter and then find the reason. Also, we can consider adding a status field errorReason that gives a clear message or group errors by code.