Virtuozzo VzLinux 8.4 - bug fixes and RHEL 8.4 updates

Virtuozzo VzLinux comes in a new version with bug fixes and updates provided by RHEL 8.4.

New functions

- Libreswan IPsec VPN now supports TCP encapsulation and security tags for IKEv2.
- The nmstate network API for hosts is fully supported in version 8.4.
- Ansible modules are available for automatic role-based access control (RBAC) management in Identity Management (IdM), an Ansible role for backing up and restoring IdM servers and an Ansible module for location management.
- Newer module streams are now available: Python 3.9, SWIG 4.0, Subversion 1.14, Redis 6, PostgreSQL 13, MariaDB 10.5.
- The compilers have been updated: GCC Toolset 10, LLVM Toolset 11.0.0, Rust Toolset 1.49.0, Go Toolset 1.15.7.