Update Dockerfile.j2

Author: pettershao-ragilenetworks

platform/vs/docker-syncd-vs/Dockerfile.j2

@@ -32,4 +32,5 @@ COPY ["critical_processes", "/etc/supervisor/"]
 RUN apt-get clean -y; apt-get autoclean -y; apt-get autoremove -y
 RUN rm -rf /debs
 
+RUN echo /usr/lib/libgcovpreload.so > /etc/ld.so.preload
 ENTRYPOINT ["/usr/local/bin/supervisord"]