Fixes #32908 - Allow UTF character in vnic attributes

If vnic profile attributes contained UTF characters the to_json method
returned error. In order to support this passed the data by
JSON.generate instead.

Fixes #31638 - Adds host status overview page

Fixes #33092 - Restart network on EL8

Fixes #32727 - Added status and version to api call (#8572)

Fixes #32822 - Job templates and resource picker

New `resource` user input type for templates with
template macro `input_resource` returning the resource object

Fixes #33048 - Add Associate VM to dropdown

Fixes #33033 - shell_escape template macro

New template macro `shell_escape` using
Ruby's `Shellwords.shellescape` for safe shell strings.

Use `shell_escape` for user input variables
in registration templates (`global` & `host_init`)

Fixes #33004 - Registration - Refresh subscription data

Fixes #33155 - Drop Spice XPI support

This plugin is no longer maintained and relied on Xulrunner support in
Firefox. That means that with Firefox 60 or newer it's broken.

Fixes #31751 - make enable-epel false by default

Users should explicitly opt-in to have EPEL enabled on their systems