WIP: EL8 rpm package

[punkrokk]

• Added support for EL8
• Works fine, locally, but there are a bunch of node security issues.
• most build are broken, not sure if this was the deal already, I can build locally fine.
• lots broken in circle.

npm install --production
npm WARN babel-eslint@10.0.2 requires a peer of eslint@>= 4.12.1 but none is installed. You must install peer dependencies yourself.
npm WARN hubot-botframework@0.10.1 requires a peer of hubot@^2.19.0 but none is installed. You must install peer dependencies yourself.

audited 6575 packages in 8.185s
found 228 vulnerabilities (2 low, 56 moderate, 168 high, 2 critical)
  run `npm audit fix` to fix them, or `npm audit` for details
npm cache verify && npm cache clean --force

cc @armab

[punkrokk]

#104 cc @blag

[arm4b]

I've restarted previously successful builds and they're are broken as well.
Might be some upstream dependency change during the build process that rolled out between now and latest build time.

[punkrokk]

@armab @blag What I can say is EL8 builds on my mac. I'll see what I can figure out this week. The node stuff is a bit out of my wheelhouse these days.

[blag]

@punkrokk Can you (on your local machine) rebase these changes on #136 and see if it still builds on your machine? CircleCI has been bugging out for that PR this weekend.

[punkrokk]

@blag Still able to build on my mac but not in circle. See the logs in circle. Its something to do with the npm version and the root user the containers use.