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_systeminfo_parameters.robot b/ipmi/test_ipmi_systeminfo_parameters.robot
index 06a590f..60a1d26 100644
--- a/ipmi/test_ipmi_systeminfo_parameters.robot
+++ b/ipmi/test_ipmi_systeminfo_parameters.robot
@@ -451,7 +451,7 @@
     END
     ${fw_ver_hex}=  Evaluate  " ".join(${fw_ver_hex_list})
 
-    [Return]  ${fw_ver_hex}  ${hex_data_list}
+    RETURN  ${fw_ver_hex}  ${hex_data_list}
 
 
 Get System Info Set In Progress
@@ -462,7 +462,7 @@
     ...  ${IPMI_RAW_CMD['System_Info']['param0_Set_In_Progress']['Get'][0]}
     ${resp}=  Split String  ${resp}
 
-    [Return]  ${resp}
+    RETURN  ${resp}
 
 
 Set System Info Set In Progress
@@ -484,7 +484,7 @@
     ...  ${IPMI_RAW_CMD['System_Info']['param1_System_Firmware_Version']['Get'][0]}
     ${resp}=  Split String  ${resp}
 
-    [Return]  ${resp}
+    RETURN  ${resp}
 
 
 Set System Firmware Version
@@ -505,7 +505,7 @@
     ...  ${IPMI_RAW_CMD['System_Info']['param2_System_Name']['Get'][0]}
     ${resp}=  Split String  ${resp}
 
-    [Return]  ${resp}
+    RETURN  ${resp}
 
 
 Set System Name
@@ -526,7 +526,7 @@
     ...  ${IPMI_RAW_CMD['System_Info']['param3_Primary_Operating_System_Name']['Get'][0]}
     ${resp}=  Split String  ${resp}
 
-    [Return]  ${resp}
+    RETURN  ${resp}
 
 
 Set Primary OS Name
@@ -547,7 +547,7 @@
     ...  ${IPMI_RAW_CMD['System_Info']['param4_Operating_System_Name']['Get'][0]}
     ${resp}=  Split String  ${resp}
 
-    [Return]  ${resp}
+    RETURN  ${resp}
 
 
 Set OS Name
@@ -568,7 +568,7 @@
     ...  ${IPMI_RAW_CMD['System_Info']['param5_Present_OS_Version_number']['Get'][0]}
     ${resp}=  Split String  ${resp}
 
-    [Return]  ${resp}
+    RETURN  ${resp}
 
 
 Set Present OS Version Number
@@ -593,7 +593,7 @@
     ${prefix_list}=  Prefix Bytes  ${list}
     ${prefix_list}=  Evaluate  " ".join(${prefix_list})
 
-    [Return]  ${prefix_list}
+    RETURN  ${prefix_list}
 
 
 Suite Setup Execution