Update robot codes with latest directives

Changes:
   - Non local variable is not uppercase
   - The assignment sign is not consistent within the file.
     Expected = but instead of blank spaces
   - Run KeyWord If is deprecated since Robot
     Framework version 5.*, use 'IF' instead

Tested:
    - Checked using robot dry-run to make sure the
      syntax is not broken
Change-Id: I08a142a18a9066abdd6494bcddc167122564fd17
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/network/test_cable_pull_recover.robot b/network/test_cable_pull_recover.robot
index d1fc2c8..db9f8ca 100644
--- a/network/test_cable_pull_recover.robot
+++ b/network/test_cable_pull_recover.robot
@@ -21,7 +21,7 @@
 
 Suite Setup     Test Setup Execution
 
-Test Tags      Cable_Pull_Recover
+Test Tags       Cable_Pull_Recover
 
 *** Variables ***
 
@@ -53,10 +53,11 @@
     Device Write  enable
     Device Write  configure terminal
     Device Write  interface port ${PORT_NUMBER}
-    Run Keyword If  '${state}' == 'DOWN'
-    ...    Device Write  shutdown
-    ...  ELSE
-    ...    Device Write  no shutdown
+    IF  '${state}' == 'DOWN'
+        Device Write  shutdown
+    ELSE
+        Device Write  no shutdown
+    END
     Wait Until Keyword Succeeds  30 sec  5 sec
     ...  Check Network Interface State  ${state}