Skip tests on dualtor topology (sonic-net#8564)

Skip tests which do not support dualtor topology.

tests/common/plugins/conditional_mark/tests_mark_conditions.yaml

@@ -327,42 +327,46 @@ dut_console:
 ecmp/inner_hashing/test_inner_hashing.py:
   skip:
     conditions_logical_operator: or
-    reason: "PBH introduced in 202111 and skip this test on Mellanox 2700 platform"
+    reason: "PBH introduced in 202111 and skip this test on Mellanox 2700 platform. Test does not support dualtor topology."
     conditions:
       - "branch in ['201811', '201911', '202012', '202106']"
       - "platform in ['x86_64-mlnx_msn2700-r0']"
       - "topo_type not in ['t0']"
       - "asic_type not in ['mellanox']"
+      - "'dualtor' in topo_name"
 
 ecmp/inner_hashing/test_inner_hashing_lag.py:
   skip:
     conditions_logical_operator: or
-    reason: "PBH introduced in 202111 and skip this test on Mellanox 2700 platform"
+    reason: "PBH introduced in 202111 and skip this test on Mellanox 2700 platform. Test does not support dualtor topology."
     conditions:
       - "branch in ['201811', '201911', '202012', '202106']"
       - "platform in ['x86_64-mlnx_msn2700-r0']"
       - "topo_type not in ['t0']"
       - "asic_type not in ['mellanox']"
+      - "'dualtor' in topo_name"
 
 ecmp/inner_hashing/test_wr_inner_hashing.py:
   skip:
     conditions_logical_operator: or
-    reason: "PBH introduced in 202111 and skip this test on Mellanox 2700 platform"
+    reason: "PBH introduced in 202111 and skip this test on Mellanox 2700 platform. Test does not support dualtor topology."
     conditions:
       - "branch in ['201811', '201911', '202012', '202106']"
       - "platform in ['x86_64-mlnx_msn2700-r0']"
       - "topo_type not in ['t0']"
       - "asic_type not in ['mellanox']"
+      - "'dualtor' in topo_name"
 
 ecmp/inner_hashing/test_wr_inner_hashing_lag.py:
   skip:
     conditions_logical_operator: or
-    reason: "PBH introduced in 202111 and skip this test on Mellanox 2700 platform"
+    reason: "PBH introduced in 202111 and skip this test on Mellanox 2700 platform. Test does not support dualtor topology."
     conditions:
       - "branch in ['201811', '201911', '202012', '202106']"
       - "platform in ['x86_64-mlnx_msn2700-r0']"
       - "topo_type not in ['t0']"
       - "asic_type not in ['mellanox']"
+      - "'dualtor' in topo_name"
 
 ecmp/test_fgnhg.py:
   skip:
@@ -507,11 +511,12 @@ http/test_http_copy.py:
 #######################################
 iface_loopback_action/test_iface_loopback_action.py:
   skip:
-    reason: "Not working on non-mellanox platform or T1 topo"
+    reason: "Not working on non-mellanox platform or T1 topo. Test does not support dualtor topology."
     conditions_logical_operator: "OR"
     conditions:
       - "asic_type not in ['mellanox'] and https://github.com/sonic-net/sonic-mgmt/issues/7704"
       - "'t1' in topo_name"
+      - "'dualtor' in topo_name"
 
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