#3246 imm: incorrect delay start sync

[Thuan Tran]

Incorrect delay start sync (waiting for number of node > cluster size)
Example: found following message (immnd trace) in a cluster 5 nodes

<142>1 2020-12-24T15:30:40.968086+07:00 SC-2 osafimmnd 194 osafimmnd [meta sequenceId="48265"] 194:imm/immnd/immnd_proc.c:787 IN Postponing sync, waiting for 8 nodes

[Thuan Tran]

commit 36c1387fe9990b84686d003f0812a33eea011b7e (HEAD -> develop, origin/develop)
Author: thuan.tran thuan.tran@dektech.com.au
Date: Thu Dec 24 13:52:48 2020 +0700

imm: fix incorrect delay start sync [#3246]

- Incorrect counting lost nodes cause new coordinator
postpone sync waiting for a number of node bigger than cluster size.
- Correct counting lost nodes by a set of lost node Id.