AMBARI-3239. Modify the message for HostCleanup script to say Python 2.6 or greater is required. (yusaku)

ambari-web/app/messages.js

@@ -343,7 +343,7 @@ Em.I18n.translations = {
   'installer.step3.hostWarningsPopup.report.user': '<br><br>######################################<br># Users<br>#<br># A space delimited list of users who should not exist.<br># Provided so that administrators can easily copy paths into scripts, email etc.<br># Example: userdel hdfs<br>######################################<br>USERS<br>',
   'installer.step3.hostWarningsPopup.report.folder': '\\ /folder',
   'installer.step3.hostWarningsPopup.checks': 'Host Checks found',
-  'installer.step3.hostWarningsPopup.notice':'After manually resolving the issues, click <b>Rerun Checks</b>.<br>To manually resolve issues on <b>each host</b> run the HostCleanup script:<br><div class="code-snippet">python /usr/lib/python2.6/site-packages/ambari_agent/HostCleanup.py</div>',
+  'installer.step3.hostWarningsPopup.notice':'After manually resolving the issues, click <b>Rerun Checks</b>.<br>To manually resolve issues on <b>each host</b> run the HostCleanup script (Python 2.6 or greater is required):<br><div class="code-snippet">python /usr/lib/python2.6/site-packages/ambari_agent/HostCleanup.py</div>',
   'installer.step3.hostWarningsPopup.summary':'{0} on {1}',
   'installer.step3.hostWarningsPopup.process':'Process Issues',
   'installer.step3.hostWarningsPopup.processes.message':'The following processes should not be running',