Modernize openvox-server install_from_packages page

[miharp]

Overview

The openvox-server install from packages page is significantly out of date and is a single flat page rather than a structured section. The openvox agent install docs demonstrate the target structure.

Current state

A single install_from_packages.markdown covers everything and is linked as a flat item in _data/nav/openvox-server_8x.yml. It also references EOL platforms and outdated Java guidance, and links out to puppet.com instead of openvox equivalents.

Goal: mirror the openvox "Installing and upgrading" section structure

The openvox agent docs break installation into a proper nav section with dedicated pages. The openvox-server docs should do the same. Note that openvox-server is Linux-only — no Windows or macOS pages are needed.

New pages to create in docs/_openvox-server_8x/

Filename	Nav title	Content
install_pre.md	Before you begin	Supported OS platforms, Java requirements, firewall/port prerequisites
install_from_packages.md	Install OpenVox Server	Step-by-step install with separate apt and yum/dnf sections, verification step, service start/enable
install_what_and_where.md	What gets installed and where	File layout, service names, config paths, log locations
upgrade_minor.md	Upgrading OpenVox Server	Minor version upgrade procedure

The existing install_from_packages.markdown should be replaced by install_from_packages.md with updated content (or the file renamed and rewritten in place).

Nav update required

Replace the current flat entry in _data/nav/openvox-server_8x.yml:

- text: Installing Puppet Server
  link: install_from_packages.html

With a grouped section:

- text: Installing and upgrading
  items:
  - text: Before you begin
    link: install_pre.html
  - text: Install OpenVox Server
    link: install_from_packages.html
  - text: What gets installed and where
    link: install_what_and_where.html
  - text: Upgrading OpenVox Server
    link: upgrade_minor.html

Use the openvox agent nav in _data/nav/openvox_8x.yml and pages in docs/_openvox_8x/ (e.g. install_pre.markdown, install_linux.markdown, install_what_and_where.markdown, upgrade_minor.md) as structural references.

Content issues to fix

• Update supported platform list (remove RHEL 6–7, Debian 8–10, Ubuntu 16.04–18.04, SLES 12)
• Remove outdated Java version table and caveats (backports, universe repo) that no longer apply to supported platforms
• Split install commands into clearly labeled apt and yum/dnf sections
• Add a verification step after installation (e.g. puppetserver --version, service status)
• Expand post-install section inline rather than only linking out

Dead links to fix in the existing page

All of the following point to puppet.com and must be updated to openvox equivalents:

Current link	Replace with
https://puppet.com/docs/puppet/latest/puppet_platform.html	openvox repositories and packages page
https://tickets.puppet.com/browse/SERVER	OpenVoxProject GitHub issues
https://puppet.com/docs/puppet/latest/install_agents.html	/openvox/latest/install_linux.html
https://puppet.com/docs/puppetdb/latest/install_via_module.html	/openvoxdb/latest/install_via_module.html