ARQ-1168 Added a tight dependency on the BeansXml API from Weld Bootstrap SPI. This SPI has changed in the Weld 2.x branch which cause the Container to fail runtime.

The reason for the tight dependency is to support merging duplicate entries in beans.xml when using a FlatDeployment structure.

Weld 2.x Bootstrap has added support for this feature via the new parse(beans.xml, merge) method.

Update the weld containers to support the old and new way of merging the beans.xml.