[pfcwd]: increase the pause waiting time and ingore snmp errors

ansible/roles/test/tasks/pfc_wd/config_test/config_test_ignore_messages

@@ -2,5 +2,5 @@ r, ".* Port counter .* not implemented"
 r, ".* Port counter .* not supported"
 r, ".* Invalid port counter .*"
 r, ".* Unknown stat.*"
-r, ".* snmpd .*"
+r, ".* snmpd.*"
 r, ".* Trying to remove nonexisting queue from flex counter .*"

ansible/roles/test/tasks/pfc_wd/functional_test/functional_test.yml

@@ -142,7 +142,7 @@
 
     - name: Let PFC storm happen for a while
       pause:
-        seconds: 1
+        seconds: 5
 
     - name: Check if logs contain message that PFC WD detected deadlock
       include: roles/test/files/tools/loganalyzer/loganalyzer_analyze.yml

ansible/roles/test/tasks/pfc_wd/functional_test/ignore_pfc_wd_messages

@@ -2,5 +2,5 @@ r, ".* Port counter .* not implemented"
 r, ".* Port counter .* not supported"
 r, ".* Invalid port counter .*"
 r, ".* Unknown stat.*"
-r, ".* snmpd .*"
+r, ".* snmpd.*"
 r, ".* Trying to remove nonexisting queue from flex counter .*"