Merge branch 'commons-net-20'

* commons-net-20:
  Drop Commons Net back to 2.0

pom.xml

diff --git a/pom.xml b/pom.xml
index e4de7b3..0ef6d2d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -527,7 +527,7 @@
       <dependency>
         <groupId>commons-net</groupId>
         <artifactId>commons-net</artifactId>
-        <version>2.1</version>
+        <version>2.0</version>
       </dependency>
 
       <dependency>