Kubernetes 1.8 reference docs (#5632)

* Kubernetes 1.8 reference docs

* Kubectl reference docs for 1.8

* Update side bar with 1.8 kubectl and api ref docs links

docs/api-reference/v1.8/node_modules/highlight.js/lib/languages/json.js

@@ -0,0 +1,36 @@
+module.exports = function(hljs) {
+  var LITERALS = {literal: 'true false null'};
+  var TYPES = [
+    hljs.QUOTE_STRING_MODE,
+    hljs.C_NUMBER_MODE
+  ];
+  var VALUE_CONTAINER = {
+    end: ',', endsWithParent: true, excludeEnd: true,
+    contains: TYPES,
+    keywords: LITERALS
+  };
+  var OBJECT = {
+    begin: '{', end: '}',
+    contains: [
+      {
+        className: 'attr',
+        begin: /"/, end: /"/,
+        contains: [hljs.BACKSLASH_ESCAPE],
+        illegal: '\\n',
+      },
+      hljs.inherit(VALUE_CONTAINER, {begin: /:/})
+    ],
+    illegal: '\\S'
+  };
+  var ARRAY = {
+    begin: '\\[', end: '\\]',
+    contains: [hljs.inherit(VALUE_CONTAINER)], // inherit is a workaround for a bug that makes shared modes with endsWithParent compile only the ending of one of the parents
+    illegal: '\\S'
+  };
+  TYPES.splice(TYPES.length, 0, OBJECT, ARRAY);
+  return {
+    contains: TYPES,
+    keywords: LITERALS,
+    illegal: '\\S'
+  };
+};