Fix variable in network test

Change-Id: Ic89875662258efe8b4ecbdeabf41bc9672e0a288
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/systest/network_stability_test.robot b/systest/network_stability_test.robot
index 9b50021..d2edbfd 100644
--- a/systest/network_stability_test.robot
+++ b/systest/network_stability_test.robot
@@ -61,7 +61,7 @@
     ${status}=  Run Until Keyword Fails  ${HTX_DURATION}  ${HTX_INTERVAL}
     ...  Start Network Test
 
-    Run Keyword If  '${status}' == '{False}'
+    Run Keyword If  '${status}' == 'False'
     ...  Fail  Network is unstable. Please check for errors.
 
     Shutdown HTX Exerciser