Merge branch 'branch-0.4.0' into 'branch-0.4.0'

update build.sh

See merge request megasearch/milvus!328

Former-commit-id: 52fe092b7914e3ce8f7f01af8d9377e68ed00b03

cpp/build.sh

@@ -18,6 +18,7 @@ do
         case $arg in
              t)
                 BUILD_TYPE=$OPTARG # BUILD_TYPE
+                KNOWHERE_OPTS="${KNOWHERE_OPTS} -t $OPTARG"
                 ;;
              u)
                 echo "Build and run unittest cases" ;