Fixes to PUA and related Usrloc-changes #3608
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Summary
This PR fixes some crashes identified in the pua_usrloc module. In order for this module to provide the relevant information, Usrloc needs to store additional information (Parameters from Contact), which is now incorporated as well.
Details
Since the body may become large, the PR introduces a variable String-Buffer to facilitate larger results. Since the result should include the params of the Contact-Header, the according Params are retrieved (and stored) from usrloc.
Solution
I did not fully test the clustering and DB-operations of data yet.
Compatibility
This PR changes the schema of the location DB (added location column), so it is not backward compatible.