DMTF Tools: Handled DMTF Tools Download If Branch Name Was Different

Changes:

    - Recently, In DMTF Tools website for few of tools repository stable branch name was changed from master to main.
    - Handled Download DMTF Tools keyword, to download dmtf tool from their respective stable branch.

Tested:
     - Ran All The Scripts Successfully

Change-Id: I7d86799051a95df4728bd728a9c90bdbe0107dad
Signed-off-by: ganesanb <ganesanb@ami.com>
diff --git a/redfish/dmtf_tools/Redfish_Interop_Validator.robot b/redfish/dmtf_tools/Redfish_Interop_Validator.robot
index e5f9b6e..cb1c493 100644
--- a/redfish/dmtf_tools/Redfish_Interop_Validator.robot
+++ b/redfish/dmtf_tools/Redfish_Interop_Validator.robot
@@ -14,6 +14,7 @@
 ...                --ip https://${OPENBMC_HOST}:${HTTPS_PORT} --authtype=Session -u ${OPENBMC_USERNAME}
 ...                -p ${OPENBMC_PASSWORD} --logdir ${EXECDIR}${/}logs${/} --debugging
 ...                ${EXECDIR}/data/openbmc_redfish_interop_profile.json
+${branch_name}     master
 
 *** Test Case ***
 
@@ -21,7 +22,7 @@
     [Documentation]  Check conformance based on the OpenBMC Interoperability profile.
     [Tags]  Test_BMC_Redfish_Using_Redfish_Interop_Validator
 
-    Download DMTF Tool  ${rsv_dir_path}  ${rsv_github_url}
+    Download DMTF Tool  ${rsv_dir_path}  ${rsv_github_url}  ${branch_name}
 
     ${rc}  ${output}=  Run DMTF Tool  ${rsv_dir_path}  ${cmd_str_master}  check_error=1