Exception in creating stream consumer puts segments into ERROR state

[npawar]

We recently encountered a situation:

1. When starting a new consuming segment, we try to create the stream consumer. This is in LLRealtimeSegmentDataManager constructor, the call to makeStreamConsumer
2. If we encounter an exception in makeStreamConsumer, the entire state transition fails
3. The segment goes into ERROR state.

Only ways to recover:

1. Restart

We should be able to gracefully recover from this. Some solutions:

1. Catch this as a transient exception, and call handleTransientException. This method will retry creating streamConsumer after a 1s sleep. The retry will happen 5 times.

cc: @mcvsubbu