Make TestGetPinnipedCategory more resilient.

If the test is run immediately after the Concierge is installed, the API server can still have broken discovery data and return an error on the first call.
This commit adds a retry loop to attempt this first kubectl command for up to 60s before declaring failure.
The subsequent tests should be covered by this as well since they are not run in parallel.

Signed-off-by: Matt Moyer <moyerm@vmware.com>

test/integration/category_test.go

@@ -7,6 +7,7 @@ import (
 	"bytes"
 	"os/exec"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/require"
 
@@ -20,13 +21,21 @@ func TestGetPinnipedCategory(t *testing.T) {
 	t.Run("category, no special params", func(t *testing.T) {
 		var stdOut, stdErr bytes.Buffer
 
+		var err error
+		require.Eventuallyf(t, func() bool {
 			cmd := exec.Command("kubectl", "get", "pinniped", "-A")
 			cmd.Stdout = &stdOut
 			cmd.Stderr = &stdErr
-		err := cmd.Run()
-		require.NoError(t, err, stdErr.String(), stdOut.String())
+			err = cmd.Run()
+			return err == nil
+		},
+			60*time.Second,
+			1*time.Second,
+			"never ran 'kubectl get pinniped -A' successfully:\n%s\n\n%s",
+			stdErr.String(),
+			stdOut.String(),
+		)
 		require.Empty(t, stdErr.String())
-
 		require.NotContains(t, stdOut.String(), "MethodNotAllowed")
 		require.Contains(t, stdOut.String(), dotSuffix)
 	})