Some types of audit event samples from [our documentation](https://www.elastic.co/guide/en/elasticsearch/reference/7.17/audit-event-types.html) include the port number in "origin.address", like **access_denied**:
```json
{"type":"audit", "timestamp":"2020-12-30T22:30:06,949+0200", "node.id":
"0RMNyghkQYCc_gVd1G6tZQ", "event.type":"transport", "event.action":
"access_denied", "authentication.type":"REALM", "user.name":"user1",
"user.realm":"default_native", "user.roles":["test_role"], "origin.type":
"rest", "origin.address":"[::1]:52434", "request.id":"yKOgWn2CRQCKYgZRz3phJw",
"action":"indices:admin/auto_create", "request.name":"CreateIndexRequest",
"indices":["<index-{now/d+1d}>"]}
```
but other types like **connection_denied** from this issue does not include the port:

```json
{"type":"audit", "timestamp":"2020-12-30T21:47:31,526+0200", "node.id":
"0RMNyghkQYCc_gVd1G6tZQ", "event.type":"ip_filter", "event.action":
"connection_denied", "origin.type":"rest", "origin.address":"10.10.0.20",
"transport.profile":".http", "rule":"deny 10.10.0.0/16"}
```

I think we should be consistent here and always include the port number in the "origin.address" field.
x-pack/plugin/security/src/main/java/org/elasticsearch/xpack/security/audit/logfile/LoggingAuditTrail.java
}
            }
            
            if (authentication.isAuthenticatedWithServiceAccount()) {
                logEntry.with(SERVICE_TOKEN_NAME_FIELD_NAME, (String) authentication.getMetadata().get(TOKEN_NAME_FIELD))
                    .with(
                        SERVICE_TOKEN_TYPE_FIELD_NAME,
                        ServiceAccountSettings.REALM_TYPE + "_" + authentication.getMetadata().get(TOKEN_SOURCE_FIELD)
                    );
            }
            return this;
        }
        LogEntryBuilder with(String key, String value) {
            if (value != null) {
                logEntry.with(key, value);
            }
            return this;
        }
        LogEntryBuilder with(String key, String[] values) {
            if (values != null) {
                logEntry.with(key, toQuotedJsonArray(values));
            }
            return this;
        }
        LogEntryBuilder with(Map<String, Object> map) {
            for (Entry<String, Object> entry : map.entrySet()) {
                Object value = entry.getValue();
                if (value.getClass().isArray()) {
                    logEntry.with(entry.getKey(), toQuotedJsonArray((Object[]) value));
                } else {