Fix BMC network config test suite

Changes:
   - Updating from Should Be True to Should Not Be True on line no:435.

Tested:
   - Ran and tested on BMC Environment.

Change-Id: Ib9484384dc8409be76c9ef63c5fd1048ee8e7515
Signed-off-by: Anvesh-Kumar_Rayankula <anvesh.kumar.rayankula@ibm.com>
diff --git a/lib/bmc_network_utils.robot b/lib/bmc_network_utils.robot
index 76a31ca..d321543 100644
--- a/lib/bmc_network_utils.robot
+++ b/lib/bmc_network_utils.robot
@@ -432,7 +432,7 @@
 
     Run Keyword If  '${valid_status_codes}' == '${HTTP_OK}'
     ...  Should Be True  ${cmd_status}
-    ...  ELSE  Should Be True  ${cmd_status}
+    ...  ELSE  Should Not Be True  ${cmd_status}
 
 Get Network Configuration
     [Documentation]  Get network configuration.