[azp] Skip auto generated saimetadata lib code coverage (#935)

Author: kcudnik

.azure-pipelines/build-template.yml

@@ -124,6 +124,7 @@ jobs:
         set -ex
         make check
         gcovr --version
+        find SAI/meta -name "*.gc*" | xargs rm -vf
         gcovr -r ./ -e ".*/SAI/.*" -e ".+/json.hpp" -e "swss/.+" -e ".*/.libs/.*" -e ".*/debian/.*" --exclude-unreachable-branches --exclude-throw-branches -x -o coverage.xml
       displayName: "Run sonic sairedis unit tests"
   - publish: $(System.DefaultWorkingDirectory)/