Add PostgreSQL server to the spire server config and get rid of using persistent volume

[Ex4amp1e]

Description

Spire-server required PersistentVolume for /run/spire/data, but we can remove it and replace PostgreSQL server configuration to simplify the system and requirements for the customers.

Also, required to upgrade spire version to any above 1.9.0 (for postgres storage support of this data), so the current latest version 1.9.5 has been chosen.

Issue link

https://github.com/networkservicemesh/deployments-k8s/issues/12072

How Has This Been Tested?

• [ ] Added unit testing to cover
• [x] Tested manually
• [ ] Tested by integration testing
• [ ] Have not tested

Types of changes

• [ ] Bug fix
• [x] New functionality
• [ ] Documentation
• [ ] Refactoring
• [ ] CI

[Ex4amp1e]

Plan: Update config only for single-cluster setup