Handle bundles when interacting with the store

[facundobatista]

We need to handle bundles properly in all the operations related to the store.

Most of that should be ok already, but for sure we need to improve some details:

• in the register command, give the option to register the name for a bundle. The idea is to provide a --type option that will allow the charm and bundle values (and possibly more in the future, like stack); this --type can be avoided if the project from where the command is issued can be identified as one or the other, otherwise it's mandatory.

• in the names command, add a column with the type of the package.

• in the build command, we should support a metadata.yaml not being there but a bundle.yaml: in that case just build a zip named .bundle with everything that is there (pretty much like we do for charms) but without building dependencies, or creating hooks/dispatch, etc. So in reality build will have two modes ("charm" and "bundle"), decided automatically after what is found in the project. Note also that some options are valid for the different modes (like --from) but others are not (like --entrypoint): in the latter cases we need to raise an error.

• in the upload command, we need to rename current --charm-file to be --file (supporting both charm and bundle files), and improve what is automatically detected from the project where the command is issued (we can guess the name from a possible metadata.yaml, for example, but not from a bundle.yaml).

[facundobatista]

We went to a more explicit model regarding the commands...

These are the specific ones:

• register-bundle
• upload-bundle
• release-bundle

These are still under study (if to be shared, or new ones be created):

• revisions
• status

OTOH, names if for "everything registered by the user", so it makes totally sense to work for "everything".

[hmlanigan]

Can we have a bundle init like we have a charm init?

[facundobatista]

Everything landed. Still to work on some docs.

[facundobatista]

Can we have a bundle init like we have a charm init?

No really needed, as normally we ask Juju to create the bundles, see here.

[facundobatista]

We got docs.