Add retry counter on failed reconciliation

[yitsushi]

Describe the solution you'd like:
Right we we have code to abort reconciliation for a VM if it failed N times, but we never set the Retried field.

Why do you want this feature:
If something is wrong, we get an infinite reconciliation loop. It would be nice if the system would stop doing it after N failures and clean the Retries field on successful reconciliation.

Anything else you would like to add:
nothing