when dump is enabled, body gets truncated

For a transport binding scenario, if any message dump is enabled on the server,
the client gets an empty body. Due to this the tests fail.
#### Environment
Operating System: All
Platform: All
#### Affected Versions
[current]

Source: [https://github.com/javaee/metro-wsit/issues/472](https://github.com/javaee/metro-wsit/issues/472)
Author: glassfishrobot

Start by reproducing the transport binding test failure with server message dumping enabled, then trace the request and response body handling around the dump path. The work is done when enabling any message dump no longer produces an empty client body and the affected tests pass.

Written by the indexing model from the issue text.