lf_interop_real_browser_test.py: Modified data saving in csv for endpoint changes

We store entire response when cx exists and only the keys when missing

VERIFIED CLI: python3 lf_interop_real_browser_test.py --mgr 192.168.207.78
	--url "https://google.com" --duration 1m --debug
	--upstream_port 1.1.eth1 --device_list 1.10

Signed-off-by: GSMPraneeth-candela <praneeth.gude@candelatech.com>

Author: GSMPraneeth-candela

py-scripts/real_application_tests/real_browser/lf_interop_real_browser_test.py

@@ -1400,7 +1400,7 @@ def get_keys(resp):
                         gen_endp,
                         current_status,
                         url,
-                        keys
+                        keys if current_status == "Not Found / Deleted" else generic_endpoint.get("endpoint", {})
                     ]
                 )