It's simpler to have fewer of these, and it's clearer from callsites if it's
always explicit exactly which domain is being created.
I also removed two irregularities: domain_create.xml included hostnames but
domain_create_wildcard.xml did not, and the former called the domain name
%DOMAIN% whereas the latter called it %HOSTNAME%.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=204956433
This change renames directories in preparation for the great package
rename. The repository is now in a broken state because the code
itself hasn't been updated. However this should ensure that git
correctly preserves history for each file.
