Update workflow for version checks

.github/workflows/check_samples.yml

@@ -0,0 +1,34 @@
+name: Check Samples
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  check-allowed-file-names:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Check Allowed File Names
+      run: |
+        NOT_SAMPLES=$(find . -not -path '*/\.*' -type f ! \( -name '*.conf.sample' -o -name 'README.md' -o -name 'LICENSE' \))
+        NOT_SAMPLES_COUNT=$(echo "${NOT_SAMPLES}" | wc -w)
+        if (( NOT_SAMPLES_COUNT > 0 )); then
+            echo "The following files are not allowed:"
+            echo "${NOT_SAMPLES}"
+            exit 1
+        fi
+
+    - name: Check Version Date Line Exists
+      run: |
+        VERSION_LINE_MISSING=$(find . -not -path '*/\.*' -type f -name '*.conf.sample' -exec grep -H -c -P '^## Version \d{4}/\d{2}/\d{2}$' {} \; | grep 0$ | cut -d':' -f1)
+        VERSION_LINE_MISSING_COUNT=$(echo "${VERSION_LINE_MISSING}" | wc -w)
+        if (( VERSION_LINE_MISSING_COUNT > 0 )); then
+            echo "The following files are missing the version date line:"
+            echo "${VERSION_LINE_MISSING}"
+            exit 1
+        fi