[SPARK-17259] Hadoop 2.7 profile declare itself active by default. This is to see if the jenkins builds pick this up; I'm not proposing it as part of the final patch

Author: steveloughran

pom.xml

@@ -2511,6 +2511,9 @@
 
     <profile>
       <id>hadoop-2.7</id>
+      <activation>
+        <activeByDefault>true</activeByDefault>
+      </activation>
       <properties>
         <hadoop.version>2.7.3</hadoop.version>
         <jets3t.version>0.9.3</jets3t.version>