Adding example for Red Hat Subscription Manager hosted

Uses Subscription Manager on RHEL machines to connect to the customer
portal, attach to the first available subscription, check for updates and
apply them if available.

Author: bdunne

examples/subscription_manager_hosted.rb

@@ -0,0 +1,25 @@
+$:.push("../lib")
+require 'linux_admin'
+
+username = "MyUsername"
+password = "MyPassword"
+
+
+reg_status = LinuxAdmin.registered?
+puts "Registration Status: #{reg_status.to_s}"
+
+unless reg_status
+  puts "Registering to Subscription Manager..."
+  LinuxAdmin::SubscriptionManager.register(:username => username, :password => password)
+end
+
+reg_type = LinuxAdmin.registration_type
+puts "Registration System: #{reg_type}"
+
+puts "Subscribing to channels..."
+reg_type.subscribe(reg_type.available_subscriptions.keys.first)
+puts "Checking for updates..."
+if LinuxAdmin::Yum.updates_available?
+  puts "Updates Available \n Updating..."
+  puts "Updates Applied" if LinuxAdmin::Yum.update
+end