Do some better linting (#13)

* Do some better linting

* Update names, Packer version, and more

* Do not lint on push

* More linting and scripting

* Cleanup shellcheck lint

* Add Packer format check

* Fix Packer formatting

* Limit to only one

* Remove generated HCL files

* Only lint checked files

* Use pipes instead

* Improve attempt to build

Actually go back to attempting to build boxes on GitHub. Maybe it will
work better with this structure

* Change to using environment files

* Initialize plugins, first

* More verbose usage of the file

* Do the output properly this time

* PACKER_LOG set to 1

* No need for python3 anymore

* Limit to only one result

* Choose a specific CPU model

* Init separately

* Update actions version

* Add version outputting

* Correct actions version

* Try to execute qemu properly

* Fix CPU model name

* Do not over-subscribe GitHub runners

* Try type instead of command to guard runs

* Do not write to non-existent folder

* Cache packer plugins

* Use ~ instead of /home/greg

* Try the proper path

* Move to intelligent matrix

* Set global env path

* Add lots of waits for VBoxManage on hosted runners

* Add more waits

* Add more waits

distros/centos/7/amd64.pkrvars.hcl

@@ -1,12 +1,12 @@
-distro = "centos"
+distro  = "centos"
 version = "7"
 iso = {
-	url = "http://mirror.centos.org/centos/7/isos/x86_64/CentOS-7-x86_64-NetInstall-2009.iso"
-	checksum = "b79079ad71cc3c5ceb3561fff348a1b67ee37f71f4cddfec09480d4589c191d6"
+  url      = "http://mirror.centos.org/centos/7/isos/x86_64/CentOS-7-x86_64-NetInstall-2009.iso"
+  checksum = "b79079ad71cc3c5ceb3561fff348a1b67ee37f71f4cddfec09480d4589c191d6"
 }
 boot_command = [
   "<up><tab><wait>",
   "<bs><bs><bs><bs><bs> inst.ks=cdrom:/ks.cfg console=tty0",
   "<enter>"
 ]
-cd_files = [ "distros/centos/7/disc/*" ]
+cd_files = ["distros/centos/7/disc/*"]