Support explicitly defining the resource bundle for a composite component

Composite components support defining an own ResourceBundle that is accessible via the EL expression "cc.resourceBundleMap". This resource bundle is found by naming convention. There should also be a way of explicitly defining the resource bundle for a composite component. The tag could be extended with an "resourceBundle" attribute that contains the resource bundle name.
#### Affected Versions
[2.2]

Start by tracing composite component resource-bundle discovery and the cc:interface tag handling described in the issue. Define the expected behavior for a resourceBundle attribute, then verify that an explicitly named bundle is exposed through cc.resourceBundleMap alongside convention-based bundles.

Written by the indexing model from the issue text.