Use VMCache instead of map in memory to cache the index aliases

Type of change

• Bug Fix
• Feature

Please provide link to gitlab issue or ADR(Architecture Decision Record)

Does this introduce a change in the core logic?

• [YES]

Does this introduce a change in the cloud provider implementation, if so which cloud?

• AWS
• Azure
• Google Cloud
• IBM

Does this introduce a breaking change?

• [NO]

What is the current behavior?

The index alias is cached in memory Map. The cache of the aliases is not partition-safe

What is the new/expected behavior?

The index alias is cached in VMCache. The cache of the aliases is partition-safe.

Have you added/updated Unit Tests and Integration Tests?

Yes

Any other useful information