Issue sonic-net#21205: Fix swss memory usage check failure in test_bgp_stress_link_flap in sonic-vpp (sonic-net#21206)

Description of PR
Summary:
Fixes sonic-net#21205

Type of change
 Bug fix
 Testbed and Framework(new/improvement)
 New Test case
 Skipped for non-supported platforms
 Test case improvement

Approach
What is the motivation for this PR?
Makes test_bgp_stress_link_flap more robust in sonic-vpp

How did you do it?
Increase delay for sonic-vpp before teardown.

How did you verify/test it?
Run the test multiple times and it passed

Any platform specific information?
specific to sonic-vpp platform

signed-off-by: [email protected]

Author: yue-fred-gao

tests/bgp/test_bgp_stress_link_flap.py

@@ -243,10 +243,10 @@ def test_bgp_stress_link_flap(duthosts, rand_one_dut_hostname, setup, nbrhosts,
 
     # Skip the test on Virtual Switch due to fanout switch dependency and warm reboot
     asic_type = duthost.facts['asic_type']
-    if asic_type == "vs" and (test_type == "fanout" or test_type == "all"):
+    if (asic_type == "vs" or asic_type == "vpp") and (test_type == "fanout" or test_type == "all"):
         pytest.skip("Stress link flap test is not supported on Virtual Switch")
 
-    if asic_type != "vs":
+    if asic_type != "vs" and asic_type != "vpp":
         delay_time = SLEEP_DURATION
     else:
         delay_time = SLEEP_DURATION * 100
@@ -318,7 +318,11 @@ async def flap_interfaces():
 
     asyncio.run(flap_interfaces())
 
-    logger.info("Test Completed, waiting for 60 seconds to stabilize the system")
-    time.sleep(60)
+    if asic_type == "vpp":
+        sleep_time = 180
+    else:
+        sleep_time = 60
+    logger.info("Test Completed, waiting for {} seconds to stabilize the system".format(sleep_time))
+    time.sleep(sleep_time)
 
     return