Fix maven version

Change-Id: I2db3da52961d21a03ec66e8ec01d8ed40588e4b0
diff --git a/jjb/verify/osam.yaml b/jjb/verify/osam.yaml
index 4473e36..a09a43d 100644
--- a/jjb/verify/osam.yaml
+++ b/jjb/verify/osam.yaml
@@ -91,6 +91,7 @@
       - maven-target:
           goals: "test"
           pom: "pom.xml"
+          maven-version: '{maven-version}'
 
     publishers:
       - postbuildscript: