[VS Test] Skip failing subport tests (sonic-net#2370)

* Skip failing subport tests

tests/test_sub_port_intf.py

@@ -1,5 +1,6 @@
 import json
 import time
+import pytest
 
 from dvslib.dvs_common import wait_for_result
 from swsscommon import swsscommon
@@ -581,6 +582,7 @@ def _test_sub_port_intf_creation(self, dvs, sub_port_intf_name, vrf_name=None):
             self.remove_lag(parent_port)
             self.check_lag_removal(parent_port_oid)
 
+    @pytest.mark.skip(reason="Failing. Under investigation")
     def test_sub_port_intf_creation(self, dvs):
         self.connect_dbs(dvs)
 
@@ -667,6 +669,7 @@ def _test_sub_port_intf_add_ip_addrs(self, dvs, sub_port_intf_name, vrf_name=Non
             self.remove_lag(parent_port)
             self.asic_db.wait_for_n_keys(ASIC_LAG_TABLE, 0)
 
+    @pytest.mark.skip(reason="Failing. Under investigation")
     def test_sub_port_intf_add_ip_addrs(self, dvs):
         self.connect_dbs(dvs)
 
@@ -742,6 +745,7 @@ def _test_sub_port_intf_appl_db_proc_seq(self, dvs, sub_port_intf_name, admin_up
             self.remove_lag(parent_port)
             self.check_lag_removal(parent_port_oid)
 
+    @pytest.mark.skip(reason="Failing. Under investigation")
     def test_sub_port_intf_appl_db_proc_seq(self, dvs):
         self.connect_dbs(dvs)
 
@@ -866,6 +870,7 @@ def _test_sub_port_intf_admin_status_change(self, dvs, sub_port_intf_name, vrf_n
             self.remove_lag(parent_port)
             self.asic_db.wait_for_n_keys(ASIC_LAG_TABLE, 0)
 
+    @pytest.mark.skip(reason="Failing. Under investigation")
     def test_sub_port_intf_admin_status_change(self, dvs):
         self.connect_dbs(dvs)
 
@@ -950,6 +955,7 @@ def _test_sub_port_intf_remove_ip_addrs(self, dvs, sub_port_intf_name, vrf_name=
             self.remove_lag(parent_port)
             self.asic_db.wait_for_n_keys(ASIC_LAG_TABLE, 0)
 
+    @pytest.mark.skip(reason="Failing. Under investigation")
     def test_sub_port_intf_remove_ip_addrs(self, dvs):
         self.connect_dbs(dvs)
 
@@ -1141,6 +1147,7 @@ def _test_sub_port_intf_removal(self, dvs, sub_port_intf_name, removal_seq_test=
             self.remove_lag(parent_port)
             self.check_lag_removal(parent_port_oid)
 
+    @pytest.mark.skip(reason="Failing. Under investigation")
     def test_sub_port_intf_removal(self, dvs):
         self.connect_dbs(dvs)
 
@@ -1216,6 +1223,7 @@ def _test_sub_port_intf_mtu(self, dvs, sub_port_intf_name, vrf_name=None):
             self.remove_lag(parent_port)
             self.asic_db.wait_for_n_keys(ASIC_LAG_TABLE, 0)
 
+    @pytest.mark.skip(reason="Failing. Under investigation")
     def test_sub_port_intf_mtu(self, dvs):
         self.connect_dbs(dvs)
 
@@ -1444,6 +1452,7 @@ def _test_sub_port_intf_nhg_accel(self, dvs, sub_port_intf_name, nhop_num=3, cre
 
             parent_port_idx += (4 if parent_port_prefix == ETHERNET_PREFIX else 1)
 
+    @pytest.mark.skip(reason="Failing. Under investigation")
     def test_sub_port_intf_nhg_accel(self, dvs):
         self.connect_dbs(dvs)
 
@@ -1584,6 +1593,7 @@ def _test_sub_port_intf_oper_down_with_pending_neigh_route_tasks(self, dvs, sub_
 
             parent_port_idx += (4 if parent_port_prefix == ETHERNET_PREFIX else 1)
 
+    @pytest.mark.skip(reason="Failing. Under investigation")
     def test_sub_port_intf_oper_down_with_pending_neigh_route_tasks(self, dvs):
         self.connect_dbs(dvs)