Add SNMP suite teardown to clean up logs and dumps

Changes:
      - Added keyword directive for suite teardown

Tested:
      Ran succesfully redfish/events/test_bmc_snmp_trap.robot

Change-Id: I7df8a7980a6cad8765254270d9abb578691c9e11
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/redfish/events/test_bmc_snmp_trap.robot b/redfish/events/test_bmc_snmp_trap.robot
index e163b96..96cddc7 100644
--- a/redfish/events/test_bmc_snmp_trap.robot
+++ b/redfish/events/test_bmc_snmp_trap.robot
@@ -11,8 +11,9 @@
 Resource      ../../lib/logging_utils.robot
 
 
-Test Teardown  FFDC On Test Case Fail
-Suite Setup    Suite Setup Execution
+Test Teardown     FFDC On Test Case Fail
+Suite Setup       Suite Setup Execution
+Suite Teardown    Suite Teardown Execution
 
 
 *** Test Cases ***
@@ -295,6 +296,13 @@
     Valid Value  SNMP_DEFAULT_PORT
 
 
+Suite Teardown Execution
+    [Documentation]  Do suite Teardown execution.
+
+    Run Keyword And Ignore Error  Redfish Purge Event Log
+    Run Keyword And Ignore Error  Redfish Delete All BMC Dumps
+
+
 Generate Error And Verify System Up Time
     [Documentation]  Generate error and verify system up time.