Upgrade docs for 2.7.1 release (#2167)

* Upgrade docs for 2.7.1 release

* Update what's new page

docs/src/site/apt/index.apt

@@ -52,7 +52,7 @@ Introduction
 
 Getting Started with Ambari
 
-  Follow the {{{https://cwiki.apache.org/confluence/display/AMBARI/Installation+Guide+for+Ambari+2.7.0} installation guide for Ambari 2.7.0}}.
+  Follow the {{{https://cwiki.apache.org/confluence/display/AMBARI/Installation+Guide+for+Ambari+2.7.1} installation guide for Ambari 2.7.1}}.
 
   Note: Ambari currently supports the 64-bit version of the following Operating Systems:
 

docs/src/site/apt/whats-new.apt

@@ -16,7 +16,7 @@
 
 What's New with Ambari?
 
-  * The latest release of Ambari is Ambari 2.7.0.
+  * The latest release of Ambari is Ambari 2.7.1.
 
   * Ambari 2.7.0 added the following features:
 
@@ -78,7 +78,7 @@ JIRA
 
 User Guide
 
-  Take a look at {{{https://cwiki.apache.org/confluence/display/AMBARI/Installation+Guide+for+Ambari+2.5.1} how to install a Hadoop cluster using Ambari 2.5.1}}.
+  Take a look at {{{https://cwiki.apache.org/confluence/display/AMBARI/Installation+Guide+for+Ambari+2.7.1} how to install a Hadoop cluster using Ambari 2.7.1}}.
 
 Stay Tuned
 

docs/src/site/site.xml

@@ -107,6 +107,7 @@
       <item name="Quick Start Guide" href="https://cwiki.apache.org/confluence/display/AMBARI/Quick+Start+Guide"/>
       <item name="Features + Roadmap" href="https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=30755705"/>
       <item name="API Reference" href="https://github.com/apache/ambari/blob/trunk/ambari-server/docs/api/v1/index.md"/>
+      <item name="Install Guide for 2.7.1" href="https://cwiki.apache.org/confluence/display/AMBARI/Installation+Guide+for+Ambari+2.7.1"/>
       <item name="Install Guide for 2.7.0" href="https://cwiki.apache.org/confluence/display/AMBARI/Installation+Guide+for+Ambari+2.7.0"/>
       <item name="Install Guide for 2.6.2" href="https://cwiki.apache.org/confluence/display/AMBARI/Installation+Guide+for+Ambari+2.6.2"/>
       <item name="Install Guide for 2.6.1" href="https://cwiki.apache.org/confluence/display/AMBARI/Installation+Guide+for+Ambari+2.6.1"/>