Fix: missing sonic-db-cli in docker-sonic-vs image (sonic-net#640)

Author: qiluo-msft

.azure-pipelines/docker-sonic-vs/Dockerfile

@@ -16,6 +16,7 @@ RUN dpkg --purge syncd-vs
 RUN dpkg -i /debs/libswsscommon_1.0.0_amd64.deb
 RUN dpkg -i /debs/python-swsscommon_1.0.0_amd64.deb
 RUN dpkg -i /debs/python3-swsscommon_1.0.0_amd64.deb
+RUN dpkg -i /debs/sonic-db-cli_1.0.0_amd64.deb
 
 RUN dpkg -i /debs/libsaimetadata_1.0.0_amd64.deb
 RUN dpkg -i /debs/libsairedis_1.0.0_amd64.deb