Targetting 4.1

Proposal

Take the existing:

hazelcast/hazelcast/src/main/java/com/hazelcast/map/impl/proxy/MapProxyImpl.java

Line 916 in 4fed159

 public <R> Iterator<R> iterator(int fetchSize, int partitionId, Projection<Map.Entry<K, V>, R> projection, 

And create a public API in IMap which differs from the above in that it:

1. does not require partitionId but work

Some config like EnableConnLimit isn't used anywhere and can be removed.

What I Did
I was searching for the db connection limiting.

What I Saw
I ran into EnableConnLimit in config.go

What I Expect
I wanted to find the MaxDbConnPerSec.