Build JSON API changes

None

Bug Fixes

Add digests for prod-type OSBS build to koji build archive extra metadata
A problem with running in Python 3 was fixed
Repeated logs from dockpulp are now prevented
extra.docker.digests is always populated
release label is set correctly
chain rebuilds will use latest built image if a parent image is rebuild during the chain rebuild

Removal of unused annotations : logs, rpm-packages
Removal of parameters: 'module_name', 'module_stream', 'module_version', 'compose_id'
from plugin 'resolve_module_compose', added: 'compose_ids'
import_image is now also an ExitPlugin
Module versioning using ":" as separate is now allowed
pulp_push plugin copies all v1 layers in a single pulp task
reactor_config plugin reads REACTOR_CONFIG environment variable, and provides methods to accessing its content
failed chain rebuilds will attach all logs to the notification message, in addition to linking to the logs of the most recent build
plugins dealing with manifest digests will log more details to improve the ability to diagnosis situations when only one of the two media types appears on a pulp server
Plugins read environment config from reactor config if available
Flatpaks: hybrid modularity, container.yaml, package set restriction
orchestrate_build uses 'reactor_config_override' when creating worker builds
orchestrate_build allows platform specific overrides in override_build_kwarg()
preparation for rendering plugin configuration separately from the BuildConfig creation (not yet active)
pulp_pull will retrieve v2 schema 2 manifest lists
support for content_sets.yaml and pulp repositories in resolve_composes
update pulp repos to not automatically publish
use correct manifest list digest for worker build image