Add workflow for running Docker-only acc tests (#18672)

* Add workflow for running Docker-only acc tests

* Convert to caller/called workflow

* Add comments for posterity and change run trigger

* Standardize workflow names and adjust artifact retention time

* Consolidate metadata job into test job

* Shorten artifact retention time

* Standardize filenames

* Correct workflow reference

* Remove erroneous dependency reference

.github/workflows/test-acc-dockeronly-nightly.yml

@@ -0,0 +1,34 @@
+name: test-go-acceptance-nightly
+
+on:
+  # Change to nightly cadence once API-credential-requiring tests are added to the jobs
+  workflow_dispatch: 
+
+env:
+  VAULT_ACC: 1
+
+# Currently the jobs here are only for acceptance tests that have no dependencies except for Docker
+jobs:
+  plugins-database:
+    uses: ./.github/workflows/test-run-go-tests-for-path.yml
+    strategy:
+      matrix:
+        name: [mongodb, mysql, postgresql]
+    with:
+      name: plugins-database-${{ matrix.name }}
+      path: plugins/database/${{ matrix.name }}
+
+  external:
+    uses: ./.github/workflows/test-run-go-tests-for-path.yml
+    strategy:
+      matrix:
+        name: [api, identity, token]
+    with:
+      name: external-${{ matrix.name }}
+      path: vault/external_tests/${{ matrix.name }}
+  
+  # Suggestions and tips for adding more acceptance test jobs:
+  #   - the job name is up to you, but it should be derived from the path that the tests are found in
+  #     - for instance, "plugins-database" is a job for acceptance tests in the plugins/database path
+  #   - the path will be used with go test wildcards, but don't include the preceding "./" or following "/..."
+  #   - the name parameter is used to construct the log artifact's name, make it something that is related to the path

.github/workflows/test-run-go-tests-for-path.yml

@@ -0,0 +1,32 @@
+name: test-run-go-tests-for-path
+
+on:
+  workflow_call:
+    inputs:
+      name:
+        description: 'The name to use that will appear in the output log file artifact'
+        required: true
+        type: string
+      path:
+        description: 'The path to the test without the precedeing "./" or following "/..." e.g. go test -v ./$path/...'
+        required: true
+        type: string
+    # We will need to add the capacity for receiving passed secrets once we get to the tests that require API credentials
+
+jobs:
+  go-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - id: get-metadata
+        run: echo "go-version=$(cat ./.go-version)" >> $GITHUB_OUTPUT
+      - name: Set Up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: ${{ steps.get-metadata.outputs.go-version }}
+      - run: go test -v ./${{ inputs.path }}/... 2>&1 | tee ${{ inputs.name }}.txt
+      - uses: actions/upload-artifact@v3
+        with:
+          name: ${{ inputs.name }}-output
+          path: ${{ inputs.name }}.txt
+          retention-days: 2