Add support to label namespaces

Author: pmuens

Diff for: README.md

@@ -37,6 +37,9 @@ myKubernetesNamespace:
   inputs:
     kubeConfigPath: ../kubeconfig # default is `~/.kube/config`
     name: 'default' # default is `'default'`
+    labels: # default is `null`
+      foo: bar
+      baz: qux
 ```
 
 ### 4. Deploy

Diff for: package.json

@@ -1,6 +1,6 @@
 {
   "name": "@serverless/kubernetes-namespace",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "main": "./serverless.js",
   "publishConfig": {
     "access": "public"

Diff for: serverless.js

@@ -5,7 +5,8 @@ const { Component } = require('@serverless/core')
 
 const defaults = {
   kubeConfigPath: path.join(process.env.HOME, '.kube', 'config'),
-  name: 'default'
+  name: 'default',
+  labels: null
 }
 
 class KubernetesNamespace extends Component {
@@ -53,8 +54,8 @@ class KubernetesNamespace extends Component {
     return kc
   }
 
-  async createNamespace(k8s, { name }) {
-    return k8s.createNamespace({ metadata: { name } })
+  async createNamespace(k8s, { name, labels }) {
+    return k8s.createNamespace({ metadata: { name, labels } })
   }
 
   async readNamespace(k8s, { name }) {