Use case-sensitive keyword Log instead of log

Change-Id: I756aedef764cdbbc91d27b6eba060cb4e5fea66b
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/robot-systest/testsuite/hackfest_basic.robot b/robot-systest/testsuite/hackfest_basic.robot
index ee079f9..3c3bb50 100644
--- a/robot-systest/testsuite/hackfest_basic.robot
+++ b/robot-systest/testsuite/hackfest_basic.robot
@@ -71,7 +71,7 @@
 Get Vnf Ip Address
 
     ${ip_addr}   Get Vnf Management Ip Address   ${ns_id}   ${vnf_member_index}
-    log   ${ip_addr}
+    Log   ${ip_addr}
     Set Suite Variable   ${vnf_ip_addr}   ${ip_addr}
 
 Test Ping