preserve debug symbols for release receiver

receiver/CMakeLists.txt

@@ -61,6 +61,10 @@ set(MONITORING_FILES
         src/monitoring/receiver_monitoring_client_noop.cpp
         )
 
+if (CMAKE_BUILD_TYPE STREQUAL "Release")
+    set(CMAKE_BUILD_TYPE RelWithDebInfo)
+endif()
+
 if (ENABLE_NEW_RECEIVER_MONITORING)
     add_definitions(-DNEW_RECEIVER_MONITORING_ENABLED)
     find_package(gRPC REQUIRED)