Fixed cleanup of propagated SshScopes

The RequestScopePropagator handles RequestCleanup independently of
the original context. However, SshScope.Context.subContext() was
chaining the cleanup in the parent. This would cause an exception
if the parent scope happened to finish before the sub-context. Since
cleanup is already handled correctly by the RequestScopePropagator,
don't register the continued contect with the original context cleanup.

Change-Id: Ie508d1921050887b95dd18bc5806c17e4894391f
1 file changed