Add support for Fedora 20

The list of RPM packages have been updated to support the recently
released Fedora 20 distribution.

Closes-Bug: #1263291

Co-Authored: Alvaro Lopez Ortega <alvaro@gnu.org>
Change-Id: Ia66abef1a1a54e6d5ee6eebc12908cef3f1d211d
diff --git a/files/rpms/general b/files/rpms/general
index 2db31d1..40246ea 100644
--- a/files/rpms/general
+++ b/files/rpms/general
@@ -20,6 +20,7 @@
 tcpdump
 unzip
 wget
+which
 
 # [1] : some of installed tools have unversioned dependencies on this,
 # but others have versioned (<=0.7).  So if a later version (0.7.1)