Pull request #24: renaming parameter fix

Merge in ISGAPPSEC/cyperf-api-wrapper from bugfix/ISGAPPSEC2-34527-udp-sample-fix to main

Squashed commit of the following:

commit f7be4250a7c2115f78cf2d158089a858a5676158
Author: iustmitu <iustin.mitu@keysight.com>
Date:   Tue May 13 14:48:06 2025 +0300

    renaming parameter

Author: Iustin-Mitu

setup.py

@@ -58,7 +58,7 @@
     import cyperf
 
     config = cyperf.Configuration(host="https://my-controller",
-                                  user="admin",
+                                  username="admin",
                                   refresh_token="get a token from CyPerf UI > Gear > Offline Token")
     # if you don't have a valid HTTPS certificate for controller, uncomment this line
     # config.verify_ssl = False