Robot Framework 7.0 changes

Update robot code syntax overall in the repo

Changes:
   - Update the requirement.txt package version for robot
   - The '[Return]' setting is deprecated.
      Use the 'RETURN' statement instead.
   - Singular section headers like '*** Test Case ***'
     are deprecated. Use plural format like
     '*** Test Cases ***' instead.
   - Singular section headers like '*** Variable ***'
     are deprecated

Tested:
   - Ran from sandbox with the version
     $ robot --version
     Robot Framework 7.0 (Python 3.10.12 on linux)

     and also tested on latest python version

     Robot Framework 7.0 (Python 3.11.9 on linux)

Change-Id: I54e85f9d799556c63b9a39f79483f83e9b980768
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/ipmi/test_ipmi_sel_time.robot b/ipmi/test_ipmi_sel_time.robot
index d60dcdd..b71e4d6 100644
--- a/ipmi/test_ipmi_sel_time.robot
+++ b/ipmi/test_ipmi_sel_time.robot
@@ -451,7 +451,7 @@
     ${get_sel_time}=  Run IPMI Command
     ...  ${IPMI_RAW_CMD['SEL_entry']['Get_SEL_Time'][0]}
 
-    [Return]    ${get_sel_time}
+    RETURN    ${get_sel_time}
 
 
 Set SEL Time Entry Via Raw Command
@@ -492,14 +492,14 @@
     ${sel_entry}=  Get Lines Containing String  ${get_sel_entry}  ${event_type}
     Should Contain  ${sel_entry}  ${event_dir}  msg=Add SEL Entry failed.
 
-    [Return]  ${sel_entry}
+    RETURN  ${sel_entry}
 
 
 Check Current Date Time Via IPMI
     [Documentation]  Verify Current Date and Time Via IPMI user command.
 
     ${resp}=  Run IPMI Standard Command  sel time get
-    [Return]  ${resp}
+    RETURN  ${resp}
 
 
 Get Specific Sel Date
@@ -516,7 +516,7 @@
     ${date}=  Add Time To Date
     ...  ${current_date}  ${days}d  result_format=%m/%d/%Y %H:%M:%S  date_format=%m/%d/%Y %H:%M:%S
 
-    [Return]   ${date}
+    RETURN   ${date}
 
 
 Converting Date to HexaDecimal
@@ -541,7 +541,7 @@
     Reverse List  ${date}
     ${date}=  Evaluate  " ".join(${date})
 
-    [Return]  ${date}
+    RETURN  ${date}
 
 
 Get Time Difference
@@ -557,7 +557,7 @@
 
     ${diff}=  Evaluate  int(${epoch_date1}) - int(${epoch_date2})
 
-    [Return]  ${diff}
+    RETURN  ${diff}
 
 
 Identify SEL Time
@@ -586,7 +586,7 @@
     #Set SEL Time.
     ${quoted_date}=  Fetch Date  ${datetime}
 
-    [Return]  ${quoted_date}  ${datetime}
+    RETURN  ${quoted_date}  ${datetime}
 
 
 Set SEL Time Via IPMI