Merge branch 'branch-0.3.0' into 'branch-0.3.0'

MS-104 - Fix unittest lcov execution error

See merge request megasearch/vecwise_engine!118

Former-commit-id: eb638d3bb247579c8ea7af90db9429b3e07d63d5

cpp/coverage.sh

@@ -32,7 +32,7 @@ for test in `ls ${DIR_UNITTEST}`; do
 done
 
 # gen test converage
-${LCOV_CMD} -d ${DIR_GCNO} -o "${FILE_INFO_MILVUS}" -c -b
+${LCOV_CMD} -d ${DIR_GCNO} -o "${FILE_INFO_MILVUS}" -c
 # merge coverage
 ${LCOV_CMD} -a ${FILE_INFO_BASE} -a ${FILE_INFO_MILVUS} -o "${FILE_INFO_OUTPUT}"