Error handling

[pksorensen]

Right now WorkFlowEngine will set status failed on the status of actions, but hangfire executor will not retry based on this.

We need to find out a way to let hangfire retry actions if failed without blocking forloops ect.

[pksorensen]

as part of commit 9713252 the async plugin handler will now not retry InvalidOperationException operations.

Also possible to break out with validation errors as part of async plugins that will skip the retry by setting retry count to 999 for the job.