TT#16933 ngcp fraud notify events with no emails

* skip the email send part for events where "interval_notify"
      undef/empty

Change-Id: I7f5bf651ec8c019ab5d7560fda10c0a2c4f4f6fa
(cherry picked from commit 85c434e169)

bin/ngcp-fraud-auto-lock

@@ -185,9 +185,11 @@ sub main {
         if (defined $event->{interval_lock} && $event->{interval_lock} > 0) {
             lock_customer($event, $subscribers);
         }
-        eval {
-            send_email($event, $subscribers);
-        };
+        if ($event->{interval_notify}) {
+            eval {
+                send_email($event, $subscribers);
+            };
+        }
         print $EVAL_ERROR if $EVAL_ERROR;
     }
     return;

bin/ngcp-fraud-daily-lock

@@ -185,9 +185,11 @@ sub main {
         if (defined $event->{interval_lock} && $event->{interval_lock} > 0) {
             lock_customer($event, $subscribers);
         }
-        eval {
-            send_email($event, $subscribers);
-        };
+        if ($event->{interval_notify}) {
+            eval {
+                send_email($event, $subscribers);
+            };
+        }
         print $EVAL_ERROR if $EVAL_ERROR;
     }
     return;