Add delete error logs for upload REST test

This test creates error log by the nature of software manager
upload detecting while uploading an invalid image.

Change-Id: Ic17ab2953dc37034a2a555f4e9c8c33a86687046
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/tests/test_rest_interfaces.robot b/tests/test_rest_interfaces.robot
index cee27cb..92dba38 100644
--- a/tests/test_rest_interfaces.robot
+++ b/tests/test_rest_interfaces.robot
@@ -184,6 +184,7 @@
     Should Be Equal  ${jsondata["data"]}  ${None}
     Should Be Equal As Strings  ${jsondata["message"]}  200 OK
     Should Be Equal As Strings  ${jsondata["status"]}  ok
+    Delete All Error Logs
 
 
 Verify REST Put Message JSON Compliant