+ :param str artifact_path: path of package content
+ :param str chart_model: helm chart/reference (string), which can be either
+ of these options:
+ - a name of chart available via the repos known by OSM
+ (e.g. stable/openldap, stable/openldap:1.2.4)
+ - a path to a packaged chart (e.g. mychart.tgz)
+ - a path to an unpacked chart directory or a URL (e.g. mychart)