Skip po2vlan usecase for backend (sonic-net#12736)

Signed-off-by: Neetha John <[email protected]>

tests/common/helpers/portchannel_to_vlan.py

@@ -11,7 +11,7 @@
 from tests.common.fixtures.duthost_utils import ports_list   # noqa F401
 from tests.common.fixtures.duthost_utils import utils_vlan_intfs_dict_orig          # noqa F401
 from tests.common.fixtures.duthost_utils import utils_vlan_intfs_dict_add
-from tests.common.helpers.backend_acl import apply_acl_rules, bind_acl_table
+from tests.common.helpers.backend_acl import bind_acl_table
 from tests.common.checkpoint import create_checkpoint, rollback
 from tests.common.utilities import check_skip_release
 
@@ -361,7 +361,7 @@ def acl_rule_cleanup(duthost, tbinfo):
     """Cleanup all the existing DATAACL rules"""
     # remove all rules under the ACL_RULE table
     if "t0-backend" in tbinfo["topo"]["name"]:
-        duthost.shell('acl-loader delete')
+        duthost.shell('acl-loader delete DATAACL')
 
     yield
 
@@ -375,7 +375,6 @@ def setup_acl_table(duthost, tbinfo, acl_rule_cleanup):
     yield
 
     if "t0-backend" in tbinfo["topo"]["name"]:
-        duthost.command('config acl remove table DATAACL')
         # rebind with new set of ports
         bind_acl_table(duthost, tbinfo)
 
@@ -384,7 +383,7 @@ def setup_acl_table(duthost, tbinfo, acl_rule_cleanup):
 def setup_po2vlan(duthosts, ptfhost, rand_one_dut_hostname, rand_selected_dut, ptfadapter,
                ports_list, tbinfo, vlan_intfs_dict, setup_acl_table, fanouthosts):  # noqa F811
 
-    if "dualtor" in tbinfo["topo"]["name"]:
+    if any(topo in tbinfo["topo"]["name"] for topo in ["dualtor", "t0-backend"]):
         yield
         return
 
@@ -417,8 +416,6 @@ def setup_po2vlan(duthosts, ptfhost, rand_one_dut_hostname, rand_selected_dut, p
 
         vp_list = running_vlan_ports_list(duthosts, rand_one_dut_hostname, rand_selected_dut, tbinfo, ports_list)
         populate_fdb(ptfadapter, vp_list, vlan_intfs_dict)
-        bind_acl_table(duthost, tbinfo)
-        apply_acl_rules(duthost, tbinfo)
     # --------------------- Testing -----------------------
         yield
     # --------------------- Teardown -----------------------