vmimage requirement plugin

[richtja]

Is your feature request related to a problem? Please describe.
Create vmimage requirement plugin for downloading vmimages which are required for test before running such test. With this feature, the vmimage download and preparations won't be part of test runtime, which can create issues with timeouts.

Describe the solution you'd like
Create vmimage requirement plugin similar to the existing podman-image or sysinfo plugins. This means to be able to define the vmimage requirement like this:

from avocado import Test


class VmimageTest(Test):

    def vmimage_test(self):
        """
        A test with vmimage dependency.

        :avocado: dependency={"type": "vmimage",  "provider": "Fedora",  "version": "40",  "arch":"x86"}
        """