[FAB-13652] consume stream message before return
[FAB-13652] consume stream message before return

Possible fix to an intermittent test flake.

Change-Id: I9e996af1e55b8ff40ccc80078633c50a1eb2a69b
Signed-off-by: Matthew Sykes <89c6e4c9c1046731a9c37abefc223a83de36a5d9@us.ibm.com>

stemlending/fabric,manish-sethi/fabric-sidedb,hyperledger/fabric,muralisrini/fabric,muralisrini/fabric,jimthematrix/fabric,stemlending/fabric,binhn/fabric,manish-sethi/fabric-sidedb,stemlending/fabric,binhn/fabric,manish-sethi/fabric,manish-sethi/fabric,muralisrini/fabric,jimthematrix/fabric,manish-sethi/fabric-sidedb,binhn/fabric,hyperledger/fabric,manish-sethi/fabric-sidedb,stemlending/fabric,manish-sethi/fabric-sidedb,manish-sethi/fabric-sidedb,manish-sethi/fabric-sidedb