Fix no keyword found in test suite

Flood Redfish Interface With Packets With Flags And Check Stabilit... | FAIL |
Several failures occurred:

1) Keyword teardown failed:
No keyword with name 'Run External IPMI Standard Command lan print' found. Did you mean:
    ipmi_client.Run External IPMI Standard Command

Change-Id: I4935ed332219f8dc1e84cab9806ced5c8c15c490
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/security/test_bmc_network_security.robot b/security/test_bmc_network_security.robot
index 0ee7a57..4158f95 100644
--- a/security/test_bmc_network_security.robot
+++ b/security/test_bmc_network_security.robot
@@ -148,7 +148,7 @@
     ...  ELSE IF  ${port} == ${SSH_PORT}
     ...  Open Connection And Log In  ${OPENBMC_USERNAME}  ${OPENBMC_PASSWORD}
     ...  ELSE IF  ${port} == ${IPMI_PORT}
-    ...  Run External IPMI Standard Command lan print
+    ...  Run External IPMI Standard Command  lan print
     ...  ELSE IF  ${port} == ${HOST_SOL_PORT}
     ...  Open Connection And Log In  ${OPENBMC_USERNAME}  ${OPENBMC_PASSWORD}  port=${HOST_SOL_PORT}
     ...  ELSE