Run shell tests under Ginkgo, changing all reporting to JUnit

* Add a test/e2e/shell.go that slurps up everything in hack/e2e-suite
and runs it as a bash test, borrowing all the code from hack/e2e.go.

* Rip out all the crap in hack/e2e.go that deal with multiple tests

* Move hack/e2e-suite/goe2e.sh to hack/ginkgo-e2e.sh so that it
doesn't get slurped up.

test/e2e/shell.go

@@ -0,0 +1,71 @@
+/*
+Copyright 2015 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package e2e
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path"
+	"path/filepath"
+
+	. "github.com/onsi/ginkgo"
+)
+
+var (
+	root = absOrDie(filepath.Clean(filepath.Join(path.Base(os.Args[0]), "..")))
+)
+
+var _ = Describe("Shell", func() {
+	// Slurp up all the tests in hack/e2e-suite
+	bashE2ERoot := filepath.Join(root, "hack/e2e-suite")
+	files, err := ioutil.ReadDir(bashE2ERoot)
+	if err != nil {
+		Fail(err.Error())
+	}
+
+	for _, file := range files {
+		fileName := file.Name() // Make a copy
+		It(fmt.Sprintf("tests that %v passes", fileName), func() {
+			runCmdTest(filepath.Join(bashE2ERoot, fileName))
+		})
+	}
+})
+
+func absOrDie(path string) string {
+	out, err := filepath.Abs(path)
+	if err != nil {
+		panic(err)
+	}
+	return out
+}
+
+// Runs the given cmd test.
+func runCmdTest(path string) {
+	By(fmt.Sprintf("Running %v", path))
+	cmd := exec.Command(path)
+	cmd.Stdout = bytes.NewBuffer(nil)
+	cmd.Stderr = cmd.Stdout
+
+	if err := cmd.Run(); err != nil {
+		Fail(fmt.Sprintf("Error running %v:\nCommand output:\n%v\n", cmd, cmd.Stdout))
+		return
+	}
+	return
+}