Multi-arch support, package updates, leave less stuff behind

[ziggythehamster]

Hi!

I worked on this last year and have had it in production for a few months now. It seems to work great. A summary of changes:

• Add support for AArch64 (aka ARM64 aka Graviton2)
• Add support for PowerPC 64 (IBM Cloud offers instances of this variety, but I have not tested this on actual hardware!)
• Update many packages to latest working ones from the Omnibus project
• Harden the agent installation by cleaning up binaries and data files that are not needed (like both MySQL and Postgres servers)
  • This greatly reduces the size of the install as well!
• Updated CA certificate bundle
• Netuitive event handler is now checked out and built like the original author intended but left a TODO ;)

I've got packages (which I'm using) on our fork: https://github.com/art19/omnibus-netuitive-agent/releases/tag/v0.8.0.art19-1