Add missing metadata types to metadata_map.yml
Add missing metadata types to metadata_map.yml

This is largely based on the response from https://developer.salesforce.com/docs/atlas.en-us.api_meta.meta/api_meta/meta_describe.htm
...we're tantalizingly close to just being able to generate our configuration from that, but it does have some discrepancies with the docs,
and I suspect we might want to add additional fields to metadata_map.yml such as which types are supported in which types of packages
so we can validate for that.

SalesforceFoundation/CumulusCI,SalesforceFoundation/CumulusCI