Propagate TES locations from input file

The HLT2 persistency introduced in !324 (merged) only stores the candidates created by HLT2 lines. This excludes any information present in the input file, such as MC objects. It would be useful to propagate all information present in the input file, or at the very least propagate an explicit subset of this which we expect to always to present and always be useful to have in the output.

(Note that we can't use InputCopyStream because of gaudi/Gaudi#102.)