utils library robot code with the latest directives

Changes:
    - Run Keyword If is deprecated since Robot
      Framework version 5.*, use 'IF' instead

Tested: -  Tested with dry-run option changes
Change-Id: I316abc34727b77489d664eebc6a4ecbd7730bf9d
Signed-off-by: Raghavendra Prabhu <Raghav.Prabhu@ibm.com>
diff --git a/lib/utils.robot b/lib/utils.robot
index e25b0a5..844d141 100755
--- a/lib/utils.robot
+++ b/lib/utils.robot
@@ -167,10 +167,8 @@
     # os_username  The username to be used to sign in to the OS.
     # os_password  The password to be used to sign in to the OS.
 
-    ${cmd_buf}=  Run Keyword If  '${os_username}' == 'root'
-    ...      Set Variable  reboot
-    ...  ELSE
-    ...      Set Variable  echo ${os_password} | sudo -S reboot
+    ${cmd_buf}=    Set Variable If    '${os_username}' == 'root'    reboot
+    ...    echo ${os_password} | sudo -S reboot
 
     ${output}  ${stderr}  ${rc}=  OS Execute Command
     ...  ${cmd_buf}  fork=${1}
@@ -187,13 +185,11 @@
     # os_password  The password to be used to sign in to the OS.
     # hard         Indicates whether to do a hard vs. soft power off.
 
-    ${time_string}=  Run Keyword If  ${hard}  Set Variable  ${SPACE}now
-    ...  ELSE  Set Variable  ${EMPTY}
+    ${time_string}=    Set Variable If    ${hard}    ${SPACE}now
+    ...    ${EMPTY}
 
-    ${cmd_buf}=  Run Keyword If  '${os_username}' == 'root'
-    ...      Set Variable  shutdown${time_string}
-    ...  ELSE
-    ...      Set Variable  echo ${os_password} | sudo -S shutdown${time_string}
+    ${cmd_buf}=    Set Variable If    '${os_username}' == 'root'    shutdown${time_string}
+    ...    echo ${os_password} | sudo -S shutdown${time_string}
 
     ${output}  ${stderr}  ${rc}=  OS Execute Command
     ...  ${cmd_buf}  fork=${1}
@@ -301,10 +297,11 @@
     #         the console.
 
     Set Boot Progress Method
-    ${state}=  Run Keyword If  '${boot_prog_method}' == 'New'
-    ...      New Get Boot Progress  quiet=${quiet}
-    ...  ELSE
-    ...      Old Get Boot Progress  quiet=${quiet}
+    IF  '${boot_prog_method}' == 'New'
+        ${state}=  New Get Boot Progress  quiet=${quiet}
+    ELSE
+        ${state}=  Old Get Boot Progress  quiet=${quiet}
+    END
 
     RETURN  ${state}