MAAS images should provide hwe-edge as soon as it is available

I would really, really like to begin sniff testing 20.04.2. This means I need to be able to install 20.04 and use the hwe-edge kernel via MAAS. However, while there is a 5.8 based hwe-edge kernel for focal, this has not found its way into MAAS for testing.

We have many hardware partners who are asking how to test 20.04.2 in their own validation/regression routines, and currently my answer has to be "well, you can't".

BUT I can certainly deploy 20.04 GA and then manually install linux-image-generic-hwe-20.04-edge to get a 5.8 kernel.

I'm guessing this is just an oversight, as we do provide edge kernels via MAAS for everything else.

bladernr@galactica:~/development $ rmadison linux-image-generic-hwe-20.04-edge |grep focal
 linux-image-generic-hwe-20.04-edge | 5.8.0.33.36~20.04.19 | focal-security | amd64, arm64, armhf, ppc64el, s390x
 linux-image-generic-hwe-20.04-edge | 5.8.0.33.36~20.04.19 | focal-updates | amd64, arm64, armhf, ppc64el, s390x
 linux-image-generic-hwe-20.04-edge | 5.8.0.34.37~20.04.20 | focal-proposed | amd64, arm64, armhf, ppc64el, s390x

Additionally, I am fielding requests from the OEMs about instructions for being able to sniff test 20.04.2 prior to release in February. The MAAS method would be to install 20.04 using the hwe-edge kernel option but I'm currently not able to do that, it seems.