rflint check warning and errors clean up

Fixing the documentation and test code for:
    - exceeds 110 characters (LineTooLong)
    - TrailingWhitespace
    - RequireTestDocumentation
    - DuplicateTestNames

Change-Id: Ia173888ed709ac7bd3511654bf89c822bc47e398
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/lib/redfish_code_update_utils.robot b/lib/redfish_code_update_utils.robot
index a383614..7520483 100644
--- a/lib/redfish_code_update_utils.robot
+++ b/lib/redfish_code_update_utils.robot
@@ -225,7 +225,8 @@
    ${sw_inv}=  Get Functional Firmware  BMC image
    ${nonfunctional_sw_inv}=  Get Non Functional Firmware  ${sw_inv}  False
 
-   ${firmware_inv_path}=  Set Variable  /redfish/v1/UpdateService/FirmwareInventory/${nonfunctional_sw_inv['image_id']}
+   ${firmware_inv_path}=
+   ...  Set Variable  /redfish/v1/UpdateService/FirmwareInventory/${nonfunctional_sw_inv['image_id']}
 
    # Below URI, change to backup image and reset the BMC.
    Redfish.Patch  /redfish/v1/Managers/bmc