Namespace can be ambiguous

[granolocks]

This is verbatim from @iliabylich on this pull request:

What do you expect from method namespace for classes with same name defined in different modules?

For example:

require 'snapi'

module A
 class ClassName
    include Snapi::Capability
  end
end

p A::ClassName.namespace
p Snapi.capabilities

module B
 class ClassName
    include Snapi::Capability
  end
end

p B::ClassName.namespace
p Snapi.capabilities

Output:

:class_name
{:class_name=>A::ClassName}
:class_name
{:class_name=>B::ClassName}

Looks like a bug.