coverity workflow (#618)

.github/workflows/coverity.yml

@@ -0,0 +1,26 @@
+# Copyright (C) The c-ares project and its contributors
+# SPDX-License-Identifier: MIT
+name: coverity
+on:
+  push:
+    branches: [ main, coverity_scan ]
+  workflow_dispatch:
+jobs:
+  build:
+    runs-on: [ ubuntu-latest ]
+    steps:
+      - name: Checkout Source
+        uses: actions/checkout@v3
+
+      - name: Coverity Full Scan
+        if: ${{ github.event_name != 'pull_request' }}
+        uses: synopsys-sig/synopsys-action@v1.5.0
+        with:
+          coverity_url: ${{ secrets.COVERITY_URL }}
+          coverity_user: ${{ secrets.COVERITY_USER }}
+          coverity_passphrase: ${{ secrets.COVERITY_PASSPHRASE }}
+          coverity_project_name: ${{ github.event.repository.name }}
+          coverity_stream_name: ${{ github.event.repository.name }}-${{ github.ref_name }}
+          coverity_policy_view: 'Outstanding Issues'
+          ### Uncomment below configuration if Synopsys Bridge diagnostic files needs to be uploaded
+          # include_diagnostics: true