Add an enabled boolean parameter for all plugins

[preetapan]

Problem

Right now there are a couple different ways to disable plugins:

• Drivers may be in the denylist

• External plugins may be deleted

However there's no way to disable builtin device plugins, and having 2 ways of disabling driver plugins is confusing.

Proposal

Plugin stanzas should universally support an enabled boolean that defaults to true. This provides a consistent control mechanism that works for builtin and external plugins.

Once there is a universal mechanism for disabling plugins, a deprecation warning should be emitted when the original task driver denylist is specified. An issue should be filed against 0.X+2 to remove the denylist entirely. (So if this is released in 0.11.0, the denylist should be removed in 0.13.0).

[shantanugadgil]

I need this! I have an old NVIDIA card with older drivers, which doesn't work with Nomad.
ref: #8303

[dpogorzelski]

Hello, is there any update on this feature? :)

[tgross]

Hi @dpogorzelski. Nope, this hasn't managed to make its way onto the roadmap.

We already have support for it in two drivers that are particularly troublesome for some users: the Nvidia device driver supports the enabled flag and raw_exec supports it as well. But it's not enforced as universal across the generic plugin configuration yet.