For this commit, we looked at all guides/content from v1.20 and
copied over any content that is still relevant for v2.0 but was
not included in the huge refactor of the v2 docs.
* change logs guide
* Argo CD guide
* import existing resources guide
* self-signed certificates guide
* image configs (missing details in master)
Signed-off-by: Jared Watts <jbw976@gmail.com>
The rewrite feature of `ImageConfig` was merged around the time v2 work started,
and as a result the docs for it were lost in v2. Re-introduce the missing docs
from 1.20.
Signed-off-by: Adam Wolfe Gordon <awg@upbound.io>
Jared Watts