HADOOP-11412 POMs mention "The Apache Software License" rather than "Apache License". (Herve Boutemy via stevel)

(cherry picked from commit 07bb0b0bbb4732687c4992e8ce61a43ce8ba3db6)

Conflicts:
	hadoop-common-project/hadoop-common/CHANGES.txt

hadoop-tools/hadoop-azure/pom.xml

@@ -14,7 +14,7 @@
 -->
 <project xmlns="http://maven.apache.org/POM/4.0.0"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <groupId>org.apache.hadoop</groupId>