Extract shared test workflows and action

[danielrbradley]

Fixes #1034

Related to #936

Stacked on top of:

• Prepare to remove actions hooks #1038
• Remove use of actions hooks #1039

The "test" and "test examples" share most of their setup except for the actual test command to run so we can extract this into a "test-setup" composite action.

Only the "run-acceptance-tests" workflow runs the example tests so we only call it from there. The main, prerelease and release workflows only call the main "test" workflow.

Reorder the top-level workflow to be closer to the order of execution to make it easier to find the code when looking at an execution run.

[danielrbradley]

There was no significant diff between the test job in the main, prerelease and release workflows.

This is the diff between the test job in the run-acceptance-tests and main workflows:

@@ -5,10 +5,8 @@
 
 jobs:
   test:
-    if: github.event_name == 'repository_dispatch' ||
-      github.event.pull_request.head.repo.full_name == github.repository
     name: test
-    needs:
+    needs: 
       - prerequisites
       - build_sdk
     permissions:
@@ -28,17 +26,10 @@
 #{{- end }}#
     - name: Checkout Repo
       uses: #{{ .Config.actionVersions.checkout }}#
+#{{- if .Config.checkoutSubmodules }}#
       with:
-        ref: ${{ env.PR_COMMIT_SHA }}
-        #{{- if .Config.checkoutSubmodules }}#
         submodules: #{{ .Config.checkoutSubmodules }}#
-        #{{- end }}#
-    - name: Checkout p/examples
-      if: matrix.testTarget == 'pulumiExamples'
-      uses: #{{ .Config.actionVersions.checkout }}#
-      with:
-        repository: pulumi/examples
-        path: p-examples
+#{{- end }}#
     - name: Setup tools
       uses: ./.github/actions/setup-tools
       with:
@@ -104,13 +95,8 @@
 #{{ .Config.actions.preTest | toYaml | indent 4 }}#
 #{{- end }}#
     - name: Run tests
-      if: matrix.testTarget == 'local'
-      run: cd examples && go test -v -json -count=1 -cover -timeout 2h -tags=${{
-        matrix.language }} -skip TestPulumiExamples -parallel 4 . 2>&1 | tee /tmp/gotest.log | gotestfmt
-    - name: Run pulumi/examples tests
-      if: matrix.testTarget == 'pulumiExamples'
       run: cd examples && go test -v -json -count=1 -cover -timeout 2h -tags=${{
-        matrix.language }} -run TestPulumiExamples -parallel 4 . 2>&1 | tee /tmp/gotest.log | gotestfmt
+        matrix.language }} -parallel 4 . 2>&1 | tee /tmp/gotest.log | gotestfmt
     strategy:
       fail-fast: false
       matrix:
@@ -120,8 +106,6 @@
         - dotnet
         - go
         - java
-        #{{- if .Config.testPulumiExamples }}#
-        testTarget: [local, pulumiExamples]
-        #{{- else }}#
-        testTarget: [local]
-        #{{- end }}#
+#{{- if .Config.extraTests }}#
+#{{ .Config.extraTests | toYaml | indent 2 }}#
+#{{ end }}#

The significant changes here is the addition of testing examples from p/examples during PR workflows (see #823).

There's also a change in the checkout ref, but this should be safely removed and use the default checkout behaviour on PRs.