[scheduler,mtsource] support for HA

[lionelvillard]

Problem
By default, the scheduler tries to allocate vpod replicas onto the same pod. When this pod becomes unavailable, the vpod also become unavailable. Not good.

Tasks:

• design - scheduling strategies
• implementation

[matzew]

Is this for the source? Should it be reflected in the issue name ?

[lionelvillard]

yes scheduler = source

[aavarghese]

/assign