Fission supportability: Add dump command to dump information for debugging (#754)

* Add v1 support tool proposal
* Fission supportability: Add dump command to dump information for debugging

fission/support/resources/fissionversion.go

@@ -0,0 +1,40 @@
+/*
+Copyright 2018 The Fission Authors.
+
+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 resources
+
+import (
+	"fmt"
+	"path/filepath"
+
+	"github.com/fission/fission/controller/client"
+	"github.com/fission/fission/fission/util"
+)
+
+type FissionVersion struct {
+	client    *client.Client
+	namespace string
+}
+
+func NewFissionVersion(client *client.Client) Resource {
+	return FissionVersion{client: client}
+}
+
+func (res FissionVersion) Dump(dumpDir string) {
+	ver := util.GetVersion(res.client)
+	file := filepath.Clean(fmt.Sprintf("%v/%v", dumpDir, "fission-version.txt"))
+	writeToFile(file, ver)
+}