increase code coverage goal for azcore

added move coverage to azcore and fixed bug in retry policy.
fixed test publishing to include sub-directories.

eng/config.json

@@ -6,7 +6,7 @@
         },
         {
             "Name": "azcore",
-            "CoverageGoal": 0.68
+            "CoverageGoal": 0.85
         },
         {
             "Name": "internal",

eng/pipelines/templates/steps/build-test.yml

@@ -57,7 +57,7 @@ steps:
       condition: succeededOrFailed()
       inputs:
         testRunner: JUnit
-        testResultsFiles: '${{parameters.GoWorkspace}}sdk/${{parameters.ServiceDirectory}}/report.xml'
+        testResultsFiles: '${{parameters.GoWorkspace}}sdk/${{parameters.ServiceDirectory}}/**/report.xml'
         testRunTitle: 'Go ${{ parameters.GoVersion }} on ${{ parameters.Image }}'
         failTaskOnFailedTests: true
 

sdk/azcore/policy_retry.go

@@ -136,7 +136,7 @@ func (p *retryPolicy) Do(req *Request) (resp *http.Response, err error) {
 	if req.body != nil {
 		// wrap the body so we control when it's actually closed
 		rwbody := &retryableRequestBody{body: req.body}
-		req.Body = rwbody
+		req.body = rwbody
 		req.Request.GetBody = func() (io.ReadCloser, error) {
 			_, err := rwbody.Seek(0, io.SeekStart) // Seek back to the beginning of the stream
 			return rwbody, err

sdk/azcore/poller_test.go

@@ -113,7 +113,7 @@ func TestOpPollerSimple(t *testing.T) {
 
 func TestOpPollerWithWidgetPUT(t *testing.T) {
 	srv, close := mock.NewServer()
-	srv.AppendResponse(mock.WithStatusCode(http.StatusAccepted), mock.WithBody([]byte(`{"status": "InProgress"}`)))
+	srv.AppendResponse(mock.WithStatusCode(http.StatusAccepted), mock.WithBody([]byte(`{"status": "InProgress"}`)), mock.WithHeader("Retry-After", "1"))
 	srv.AppendResponse(mock.WithStatusCode(http.StatusAccepted), mock.WithBody([]byte(`{"status": "InProgress"}`)))
 	srv.AppendResponse(mock.WithStatusCode(http.StatusOK), mock.WithBody([]byte(`{"status": "Succeeded"}`)))
 	// PUT and PATCH state that a final GET will happen