Add GitHub Tanzu Tile test action

New action tests tile creation to make sure changes
to the BOSH releaes and Tanzu tile don't break making
the tile. Also, fix BOSH release test link to homebrew.

.github/workflows/bosh-release.yml

@@ -25,7 +25,8 @@ jobs:
       - name: Check out the codebase.
         uses: actions/checkout@v3
       - name: Set up Homebrew
-        uses: Homebrew/actions/setup-homebrew@0c611abec1fc679030907286a2c084cc92fb8f2e
+        id: set-up-homebrew
+        uses: Homebrew/actions/setup-homebrew@master
       - name: Install BOSH CLI
         shell: bash
         run: |

.github/workflows/tanzu-tile.yml

@@ -0,0 +1,56 @@
+name: Tanzu Tile
+
+# The workflow triggered by any change in deployments/cloudfoundry/bosh/
+# or /deployments/cloudfoundry/tile
+
+on:
+  pull_request:
+    paths:
+      - 'deployments/cloudfoundry/bosh/**'
+      - 'deployments/cloudfoundry/tile/**'
+
+permissions:
+  contents: write
+
+defaults:
+  run:
+    working-directory: 'deployments/cloudfoundry/tile'
+
+jobs:
+
+  test:
+    name: Test Tanzu Tile creation
+    # Use 20.04.5 until https://github.com/open-telemetry/opentelemetry-collector-contrib/issues/16450 is resolved
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Check out the codebase.
+        uses: actions/checkout@v3
+      - name: Set up Homebrew
+        id: set-up-homebrew
+        uses: Homebrew/actions/setup-homebrew@master
+      - name: Install BOSH CLI
+        shell: bash
+        run: |
+          brew install cloudfoundry/tap/bosh-cli
+          bosh -v
+      - name: Install PCF CLI
+        shell: bash
+        run: |
+          pip install tile-generator
+      - name: Run release script
+        shell: bash
+        run: |
+          ./make-latest-tile
+          FILE=""
+          # The tile will be in the product directory, named
+          # splunk-opentelemetry-collector-VERSION.pivotal
+          for f in $(find product -maxdepth 1 -regex "product\/splunk-opentelemetry-collector\-.*pivotal")
+          do
+            FILE=$f
+          done
+
+          # Confirm tile exists, is a regular file, and non-zero size.
+          if [ ! -f "$FILE" ] || [ ! -s "$FILE" ]; then
+            echo "$FILE does not exist."
+            exit 1
+          fi