This commit moves various generic bits out of the reconciler into
separate modules, while adding more test coverage.
Some of the logic around merging chart values from references has been
improved to work with `client.Object`, instead of two separate maps.
In addition, the option to override the hostname of an Artifact has
been removed. It was undocumented and for testing purposes only, which
these days can be better achieved by e.g. configuring the
`--storage-adv-addr`.
Signed-off-by: Hidde Beydals <hello@hidde.co>
Hidde Beydals