HADOOP-18923. Switch to SPDX identifier for license name (#6149). Contributed by Colm O hEigeartaigh.

Signed-off-by: Ayush Saxena <ayushsaxena@apache.org>

pom.xml

@@ -68,7 +68,7 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/x
 
   <licenses>
     <license>
-      <name>Apache License, Version 2.0</name>
+      <name>Apache-2.0</name>
       <url>https://www.apache.org/licenses/LICENSE-2.0.txt</url>
     </license>
   </licenses>