Add code to print and check current functional image on the BMC

Output:
.image_version:                                    2.9.0-dev-550-g271cfda64
.#(CDT) 2020/07/24 02:23:15.900599 -    0.188676 - Issuing: cat /etc/os-release
..functional_version:

Change-Id: Ia7a79570e64e34966a57582e3b042da883c84c66
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/redfish/extended/redfish_bmc_code_update.robot b/redfish/extended/redfish_bmc_code_update.robot
index be54c3b..77194f3 100644
--- a/redfish/extended/redfish_bmc_code_update.robot
+++ b/redfish/extended/redfish_bmc_code_update.robot
@@ -41,6 +41,10 @@
     ${image_version}=  Get Version Tar  ${IMAGE_FILE_PATH}
     Rprint Vars  image_version
 
+    ${bmc_release_info}=  Get BMC Release Info
+    ${functional_version}=  Set Variable  ${bmc_release_info['version_id']}
+    Rprint Vars  functional_version
+
     Run Keyword If  not ${FORCE_UPDATE}
     ...  Activate Existing Firmware  ${image_version}
     Redfish Update Firmware