[maven] Add BR on logback

[Mikolaj Izdebski]

commit e7c9c8a8e25b18e34564ea6b9a28aa7eb2f26b90
Author: Mikolaj Izdebski <mizdebsk at redhat.com>
Date:   Tue Jul 23 12:13:56 2013 +0200

    Add BR on logback

 maven.spec |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/maven.spec b/maven.spec
index cb88dbc..2a9aa8b 100644
--- a/maven.spec
+++ b/maven.spec
@@ -65,6 +65,7 @@ BuildRequires:  sisu-inject >= 1:0
 BuildRequires:  sisu-plexus >= 1:0
 BuildRequires:  slf4j
 BuildRequires:  xmlunit
+BuildRequires:  mvn(ch.qos.logback:logback-classic)
 
 # Theoretically Maven might be usable with just JRE, but typical Maven
 # workflow requires full JDK, wso we require it here.