Add execution bit accidentally dropped in #4106 (#4368)

Add some smoke tests for the repository.
 - Add x bit to piholeCheckout.sh. Possibly not needed, but consistency is no bad thing
 - Ensure all files in script directorys have executable bit set

Signed-off-by: Adam Warner <me@adamwarner.co.uk>

.github/workflows/test.yml

@@ -5,21 +5,44 @@ on:
     types: [opened, synchronize, reopened, ready_for_review]
 
 jobs:
+  smoke-test:
+    if: github.event.pull_request.draft == false
+    runs-on: ubuntu-latest
+    steps:
+    -
+      name: Checkout repository
+      uses: actions/checkout@v2
+    -
+      name: Run Smoke Tests
+      run: |
+        # Ensure scripts in repository are executable
+        IFS=$'\n';
+        for f in $(find . -name '*.sh'); do if [[ ! -x $f ]]; then echo "$f is not executable" && FAIL=1; fi ;done
+        unset IFS;
+        # If FAIL is 1 then we fail.
+        [[ $FAIL == 1 ]] && exit 1 || echo "Smoke Tests Passed"
+
   distro-test:
     if: github.event.pull_request.draft == false
     runs-on: ubuntu-latest
+    needs: smoke-test
     strategy:
       matrix:
         distro: [debian_9, debian_10, debian_11, ubuntu_16, ubuntu_18, ubuntu_20, ubuntu_21, centos_7, centos_8, fedora_32, fedora_33]
     env:
       DISTRO: ${{matrix.distro}}
     steps:
-    - uses: actions/checkout@v1
-    - name: Set up Python 3.7
+    -
+      name: Checkout repository
+      uses: actions/checkout@v2
+    -
+      name: Set up Python 3.7
       uses: actions/setup-python@v2
       with:
         python-version: 3.7
-    - name: Install dependencies
+    -
+      name: Install dependencies
       run: pip install -r test/requirements.txt
-    - name: Test with tox
+    -
+      name: Test with tox
       run: tox -c test/tox.${DISTRO}.ini