UsageControl interaction - payload only if policy requires it #165
Description
When sending request to UC app, ECC sends also payload, which in some cases can be huge, and that might result in resource/time issue.
We should investigate possibility NOT to send payload UNLESS payload needs to be modified. Check which UC actions does not require payload (or inverted logic) and update creating UC request, for enforcing contract, so that payload is sent only if it is mandatory by UC app.