added deindexing for some EOL versions

Author: vikram-redhat

_templates/_page_openshift.html.erb

@@ -10,6 +10,7 @@
   <meta content="IE=edge" http-equiv="X-UA-Compatible">
   <meta content="width=device-width, initial-scale=1.0" name="viewport">
   <%= (distro_key == "openshift-webscale") ? '<meta name="robots" content="noindex,nofollow">' : '' %>
+  <%= ((["3.0", "3.1", "3.2", "3.3", "3.9", "4.1"].include?(version)) && distro_key == "openshift-enterprise") ? '<meta name="robots" content="noindex">' : '' %>
   <title><%= [topic_title, subgroup_title].compact.join(' - ') %> | <%= group_title %> | <%= distro %> <%= version %></title>
   <link href="https://assets.openshift.net/content/subdomain.css" rel="stylesheet" type="text/css">
   <link href="https://docs.openshift.com/container-platform/4.1/_stylesheets/search.css" rel="stylesheet" />
@@ -442,7 +443,7 @@
     toc = document.querySelector('#toc')
     main = document.querySelector('.main')
     okd_footer = document.querySelector('.footer-origin-docs')
-    
+
     //handle short pages
     if (window.innerHeight === document.documentElement.scrollHeight) {
       //sidebar