AWS::ElastiCache::ReplicationGroup does not add shard nodes in specific AZs when updating stack

## 1. Title

AWS::ElastiCache::ReplicationGroup

## 2. Scope of request

AWS::ElastiCache::ReplicationGroup NodeGroupConfiguration should be able to add new shards (primary and replicate nodes) in expected AZs

## 3. Expected behavior
In Create, works just fine. Shard (primary and replicate nodes) are created in expected AZs

In Update, Shards AZs nodes are created the other way around. For example, I have a cluster with 2 shards.

```
First shard:
primary node: eu-west-1b
replication node: eu-west-1a

Second shard:
primary node: eu-west-1c
replication node: eu-west-1b
```

"MyRedisCluster": {
"Properties": {
"Engine": "redis",
"MultiAZEnabled": "true",
"NodeGroupConfiguration": [
{
"NodeGroupId": "0001",
"PrimaryAvailabilityZone": "eu-west-1b",
"ReplicaAvailabilityZones": [
"eu-west-1a"
]
},
{
"NodeGroupId": "0002",
"PrimaryAvailabilityZone": "eu-west-1c",
"ReplicaAvailabilityZones": [
"eu-west-1b"
]
},
],

"NumNodeGroups": 2,
"ReplicasPerNodeGroup": 1,
},
"Type": "AWS::ElastiCache::ReplicationGroup",
"UpdatePolicy": {
"UseOnlineResharding": "true"
}
}
Then I want to update my stack and add a new shard like this:

```
Thrid shard:
primary node: eu-west-1a
replication node: eu-west-1c
```

```
{
"NodeGroupId": "0003",
"PrimaryAvailabilityZone": "eu-west-1a",
"ReplicaAvailabilityZones": [
"eu-west-1c"
]
}
```

However, Cloudformtion creates it this way:
```
Thrid shard:
primary node: eu-west-1c
replication node: eu-west-1a
```

It's important to mention that it works fine when updating shards using AWS CLI [modify-replication-group-shard-configuration](https://docs.aws.amazon.com/cli/latest/reference/elasticache/modify-replication-group-shard-configuration.html)

## 4. Helpful Links to speed up research and evaluation

https://stackoverflow.com/questions/68587858/read-replicas-are-created-in-wrong-az-when-adding-new-shards-through-cloudformat

API docs at https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-elasticache-replicationgroup.html