Update notify dash (sofa-framework#515)

Author: bakpaul

.github/workflows/ci.yml

@@ -224,12 +224,15 @@ jobs:
           binary_status=$([ '${{ steps.gen-artifact.outcome }}' == 'success' ] && \
                          [ '${{ steps.install-artifact.outcome }}' == 'success' ] && \
                          echo 'true' || echo 'false')
+
+          os=$(echo "${{ matrix.os }}" | awk -F- '{ print $1 }')
                         
 
           curl -X POST -H "X-API-KEY: $DASH_AUTH" -H "Content-Type: application/json" -d \
           "{\"id\":\"$(echo "${{ github.repository }}" | awk -F/ '{ print $2 }')\",\
            \"github_ref\":\"${{ github.sha }}\",\
            \"url\":\"https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}\",\
+           \"os\":\"$os\",\
            \"build\":$build_status,\
            \"tests\":$test_status,\
            \"binary\":$binary_status}"\