Fix exception handling in V3 API coverage extension

Commit 616098dcd36b20e01d38898b8942003df664e6ac fixed the exception
handling in the V2 version of the coverage extension so backtrace
information is not lost when an exception is reraised. This applies
the same fix to the V3 version

Change-Id: I29ec1492c2def9c60c8ff471683914ae2943966e
Merge "Fix exception handling in V3 API coverage extension"