[VOL-5584] Replace deprecated [Return] settings with RETURN across repository

Change-Id: Ia0231ed837c4407440fe93c6bf36c7a55edb7bea
Signed-off-by: Serkant Uluderya <serkant.uluderya@netsia.com>
diff --git a/tests/tt-workflow/Voltha_TT_MultiTcontTests.robot b/tests/tt-workflow/Voltha_TT_MultiTcontTests.robot
index 01e529a..7e42df9 100755
--- a/tests/tt-workflow/Voltha_TT_MultiTcontTests.robot
+++ b/tests/tt-workflow/Voltha_TT_MultiTcontTests.robot
@@ -512,7 +512,7 @@
     ${output}=    OperatingSystem.Get File    ${file}
     Log    ${output}
     ${object}=    Evaluate    json.loads(r'''${output}''')    json
-    [Return]    ${object}
+    RETURN    ${object}
 
 Get File from Remote System
     [Arguments]    ${file}    ${ip}    ${user}    ${pass}=${None}
@@ -531,7 +531,7 @@
     ${output}=    OperatingSystem.Get File    ${file}
     Log    ${output}
     ${object}=    Evaluate    json.loads(r'''${output}''')    json
-    [Return]    ${object}
+    RETURN    ${object}
 
 Run Iperf3 Test Client in Background
     [Arguments]    ${src}    ${server}    ${args}    ${out_file}
@@ -564,7 +564,7 @@
         ...    True    False
         Exit For Loop If    ${matched}
     END
-    [Return]    ${matched}    ${src}    ${dst}
+    RETURN    ${matched}    ${src}    ${dst}
 
 Setup Suite
     [Documentation]    Set up the test suite
diff --git a/tests/tt-workflow/Voltha_TT_MulticastTests.robot b/tests/tt-workflow/Voltha_TT_MulticastTests.robot
index 3ed657f..d4990ab 100644
--- a/tests/tt-workflow/Voltha_TT_MulticastTests.robot
+++ b/tests/tt-workflow/Voltha_TT_MulticastTests.robot
@@ -227,7 +227,7 @@
         ...    True    False
         Exit For Loop If    ${matched}
     END
-    [Return]    ${matched}    ${src}    ${dst}
+    RETURN    ${matched}    ${src}    ${dst}
 
 
 TT 2 RG MCAST Test