Publish docker saiserverv2 in 202012 branch (#12903)

# Why I did it
Publish docker saiserverv2 in the build pipeline.

# How I did it
Add docker saiserverv2 target in the build template.

# How to verify it
Run test in #12836 and the target has been built out successfully.

Signed-off-by: zitingguo-ms <[email protected]>

Author: Gfrom2016

.azure-pipelines/azure-pipelines-build.yml

@@ -123,7 +123,17 @@ jobs:
               make $BUILD_OPTIONS target/sonic-$(GROUP_NAME).raw
             fi
             if [ $(docker_syncd_rpc_image) == yes ]; then
+              # workaround for issue in rules/sairedis.dep, git ls-files will list un-exist files for cache
               make $BUILD_OPTIONS ENABLE_SYNCD_RPC=y target/docker-syncd-$(platform_rpc)-rpc.gz
+              pushd ./src/sonic-sairedis/SAI
+              git stash
+              popd
+              if [ $(GROUP_NAME) == broadcom ]; then
+                make $BUILD_OPTIONS ENABLE_SYNCD_RPC=y SAITHRIFT_V2=y target/docker-saiserverv2-brcm.gz
+                pushd ./src/sonic-sairedis/SAI
+                git stash
+                popd
+              fi
             fi
             if [ $(syncd_rpc_image) == yes ]; then
               make $BUILD_OPTIONS ENABLE_SYNCD_RPC=y target/sonic-$(GROUP_NAME).bin

.azure-pipelines/build-template.yml

@@ -105,6 +105,16 @@ jobs:
         fi
         if [ ${{ parameters.sync_rpc_image }} == true ]; then
           make USERNAME=admin $CACHE_OPTIONS SONIC_BUILD_JOBS=$(nproc) ENABLE_SYNCD_RPC=y target/docker-syncd-${{ parameters.platform_short }}-rpc.gz
+          # workaround for issue in rules/sairedis.dep,  git ls-files will list un-exist files for cache
+          pushd ./src/sonic-sairedis/SAI
+          git stash
+          popd 
+          if [ ${{ parameters.platform }} == broadcom ]; then
+            make USERNAME=admin $CACHE_OPTIONS SONIC_BUILD_JOBS=$(nproc) ENABLE_SYNCD_RPC=y SAITHRIFT_V2=y target/docker-saiserverv2-brcm.gz
+            pushd ./src/sonic-sairedis/SAI
+            git stash
+            popd 
+          fi
         fi
 
         make USERNAME=admin $CACHE_OPTIONS SONIC_BUILD_JOBS=$(nproc) target/sonic-${{ parameters.platform }}.bin