Comment 0 for bug 1537708

In Liberty, we need to start notification agents more carefully.
We have several variants:

1. Start only one notification agent per cloud and support Transformer feature
2. Start several notification agents without coordination (as it is done now) and switch off Transformers support

We've chosen the second variant because:
1. one notification agent per cloud is not enough for good performance
2. Transformers work not good under high load

We will switch off transformers _by default_. If a customer wants to use it, it will be possible to do using out Redis plugin which will allow to run notification agents in coordination mode.