Possibility to switch to other then UDP transport protocol in diplicate_uri

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#### Description Sometimes it's preferable to do the duplication over TCP or another transport, this little fix removes the hard-coded UDP from the diplicate_uri module parameter.

You can view, comment on, or merge this pull request online at:

https://github.com/kamailio/kamailio/pull/3108

-- Commit Summary --

* siptrace: fix hardcoded PROTO_UDP in duplicate_uri module parameter

-- File Changes --

M src/modules/siptrace/siptrace_send.c (2)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/3108.patch https://github.com/kamailio/kamailio/pull/3108.diff