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/basic_06-vnf_with_charm.robot b/robot-systest/testsuite/basic_06-vnf_with_charm.robot
index a3bf07e..6b296c5 100644
--- a/robot-systest/testsuite/basic_06-vnf_with_charm.robot
+++ b/robot-systest/testsuite/basic_06-vnf_with_charm.robot
@@ -85,10 +85,10 @@
 Get Management Ip Addresses
 
     ${ip_addr_1}   Get Vnf Management Ip Address   ${ns_id}   ${vnf_member_index_1}
-    log   ${ip_addr_1}
+    Log   ${ip_addr_1}
     Set Suite Variable   ${vnf_1_ip_addr}   ${ip_addr_1}
     ${ip_addr_2}   Get Vnf Management Ip Address   ${ns_id}   ${vnf_member_index_2}
-    log   ${ip_addr_2}
+    Log   ${ip_addr_2}
     Set Suite Variable   ${vnf_2_ip_addr}   ${ip_addr_2}