[GSS](7.2.z) Stuck messages with message grouping in cluster and restart of remote grouping handler

There are 4 servers, one local and three remote. Each server has connected receiver/producer for some group. During send and receive, restart one node with Remote grouping handler. Sometimes, some messages are missing.

Test scenario
1 Start four servers in cluster with message grouping. node-1 is "LOCAL" other are "REMOTE"
2 Create one producer which sends 500 messages to inQueue on node-1,each message has different group-id
3 For each used group create own producer and connect him to one of four servers (based on order in sequence), this producer starts messages with its specific group-id. or each used group-id is also created one consumer, connected to the same server as producer.
4 start sending/receiving messages
5 Crash sequence of node-2 is executed in 20s intervals