Officials repositories always have 2 part names with the first part
being library and second part being the offical repository name. Names
with more than 2 parts should not hit the special case for official
repositories since they are not valid official repositories.
Add tests for this ambiguity and to ensure that 3 part names are
supports for the default repository, as used by the docker store.
Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
24cbdc41ba