Remove actions.preTest in favor of integrationTestProvider

By using ci-mgmt's intended solution for running integration tests in the `provider/`
directory, we get a maintained test script and avoid overloading the `actions.preTest`
hook to run tests.

Related to pulumi/ci-mgmt#1276, pulumi/ci-mgmt#1274 (comment)

.ci-mgmt.yaml

@@ -10,12 +10,10 @@ makeTemplate: bridged
 plugins:
   - name: std
     version: "1.6.2"
-
   - name: terraform
     version: "1.0.16"
     kind: converter
-
-  - name: random 
+  - name: random
     version: "4.2.0"
   - name: aws 
     version: "4.10.0"
@@ -24,15 +22,11 @@ plugins:
   - name: azure 
     version: "4.7.0"
 team: ecosystem
-actions:
-  preTest:
-    - name: Run provider tests
-      run: |
-        cd provider && go test -v -json -count=1 -cover -timeout 2h -tags=${{ matrix.language }} -parallel 4 . 2>&1 | tee /tmp/gotest.log | gotestfmt
 license:
   ignore:
   # These projects don't have a LICENSE file, but do say mention (in README.md) that
   # they are under Apache-2.0.
   - github.com/apache/arrow
 pulumiConvert: 1
 registryDocs: true
+integrationTestProvider: true

.github/workflows/test.yml

@@ -83,8 +83,9 @@ jobs:
         token: ${{ secrets.GITHUB_TOKEN }}
         version: v2.5.0
     - name: Run provider tests
-      run: |
-        cd provider && go test -v -json -count=1 -cover -timeout 2h -tags=${{ matrix.language }} -parallel 4 . 2>&1 | tee /tmp/gotest.log | gotestfmt
+      if: matrix.testTarget == 'local'
+      working-directory: provider
+      run: go test -v -count=1 -cover -timeout 2h -tags=${{ matrix.language }} -parallel 4 .
     - name: Run tests
       if: matrix.testTarget == 'local'
       run: cd examples && go test -v -count=1 -cover -timeout 2h -tags=${{ matrix.language }} -skip TestPulumiExamples -parallel 4 .