RANGER-5471: Update Apache Ranger website with 2.8.0 (#862)

Author: pradeepagrawal8184

docs/src/site/site.xml

@@ -75,6 +75,7 @@ under the License.
 	    <item name="Security Advisories" href="https://cwiki.apache.org/confluence/display/RANGER/Vulnerabilities+found+in+Ranger" target="_blank" />
     </menu>
     <menu name="Releases">
+        <item name="2.8.0" href="https://cwiki.apache.org/confluence/display/RANGER/Apache+Ranger+2.8.0+-+Release+Notes" target="_blank" />
         <item name="2.7.0" href="https://cwiki.apache.org/confluence/display/RANGER/Apache+Ranger+2.7.0+-+Release+Notes" target="_blank" />
         <item name="2.6.0" href="https://cwiki.apache.org/confluence/display/RANGER/Apache+Ranger+2.6.0+-+Release+Notes" target="_blank" />
         <item name="2.5.0" href="https://cwiki.apache.org/confluence/display/RANGER/Apache+Ranger+2.5.0+-+Release+Notes" target="_blank" />

docs/src/site/xdoc/download.xml

@@ -29,7 +29,17 @@
 <ul>
 <li>
 <p>
-Current Stable release - Apache Ranger 2.7.0:
+Current Stable release - Apache Ranger 2.8.0:
+</p>
+<p>
+<a href="https://downloads.apache.org/ranger/2.8.0/apache-ranger-2.8.0.tar.gz">apache-ranger-2.8.0.tar.gz</a>
+(<a href="https://downloads.apache.org/ranger/2.8.0/apache-ranger-2.8.0.tar.gz.asc">PGP</a>)
+(<a href="https://downloads.apache.org/ranger/2.8.0/apache-ranger-2.8.0.tar.gz.sha512">Digest</a>)
+</p>
+</li>
+<li>
+<p>
+Apache Ranger 2.7.0:
 </p>
 <p>
 <a href="https://downloads.apache.org/ranger/2.7.0/apache-ranger-2.7.0.tar.gz">apache-ranger-2.7.0.tar.gz</a>