Modified testcase to use enum_rand_one_per_hwsku_frontend_hostname (#2954)

Description of PR
Modified route/test_route_perf.py to use 'enum_rand_one_per_hwsku_frontend_hostname' instead of 'rand_one_dut_hostname'

Approach
What is the motivation for this PR?
The testcase was already modified to use 'enum_rand_one_per_hwsku_frontend_hostname' but was missing in some functions, This PR takes care of that.

How did you do it
Replaced 'rand_one_dut_hostname' with 'enum_rand_one_per_hwsku_frontend_hostname'

Co-authored-by: falodiya <renu.falodiy@nokia.com>

Author: oxygen980

tests/route/test_route_perf.py

@@ -20,7 +20,7 @@
 ROUTE_TABLE_NAME = 'ASIC_STATE:SAI_OBJECT_TYPE_ROUTE_ENTRY'
 
 @pytest.fixture(autouse=True)
-def ignore_expected_loganalyzer_exceptions(rand_one_dut_hostname, loganalyzer):
+def ignore_expected_loganalyzer_exceptions(enum_rand_one_per_hwsku_frontend_hostname, loganalyzer):
     """
         Ignore expected failures logs during test execution.
 
@@ -38,7 +38,7 @@ def ignore_expected_loganalyzer_exceptions(rand_one_dut_hostname, loganalyzer):
     ]
     if loganalyzer:
         # Skip if loganalyzer is disabled
-        loganalyzer[rand_one_dut_hostname].ignore_regex.extend(ignoreRegex)
+        loganalyzer[enum_rand_one_per_hwsku_frontend_hostname].ignore_regex.extend(ignoreRegex)
 
 @pytest.fixture(params=[4, 6])
 def ip_versions(request):
@@ -189,8 +189,8 @@ def _check_num_routes(expected_num_routes):
     # Retuen time used for set/del routes
     return (end_time - start_time).total_seconds()
 
-def test_perf_add_remove_routes(duthosts, rand_one_dut_hostname, request, ip_versions):
-    duthost = duthosts[rand_one_dut_hostname]
+def test_perf_add_remove_routes(duthosts, enum_rand_one_per_hwsku_frontend_hostname, request, ip_versions):
+    duthost = duthosts[enum_rand_one_per_hwsku_frontend_hostname]
     # Number of routes for test
     set_num_routes = request.config.getoption("--num_routes")