showing code to possibly remove the previous annotation

[shawkins]

Pros:

• no additional locking
• could be adapted to not even rely on resourceVersion comparisons

Cons:

• additional state accumulation on ResourceState during processing. This can be narrowed, but that could end up looking like similar to a locking based solution.
• isNextReconciliationImminent is weakened - without further refinement we won't commit to dependent events triggering a next reconciliation until we're done with the current reconcilitation

Another thought - in what situations will dependents have multiple primary resources? That doesn't seem like it will be handled correctly today wrt to this eventing logic.