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/test/java/org/elasticsearch/xpack/security/audit/logfile/LoggingAuditTrailTests.java
", " + expectedDeleteServiceAccountTokenAuditEventString,
            ""
        );
        checkedFields = new MapBuilder<>(commonFields);
        checkedFields.remove(LoggingAuditTrail.ORIGIN_ADDRESS_FIELD_NAME);
        checkedFields.remove(LoggingAuditTrail.ORIGIN_TYPE_FIELD_NAME);
        checkedFields.put("type", "audit")
            .put(LoggingAuditTrail.EVENT_TYPE_FIELD_NAME, "security_config_change")
            .put(LoggingAuditTrail.EVENT_ACTION_FIELD_NAME, "delete_service_token")
            .put(LoggingAuditTrail.REQUEST_ID_FIELD_NAME, requestId);
        assertMsg(generatedDeleteServiceAccountTokenAuditEventString, checkedFields.map());
        
        CapturingLogger.output(logger.getName(), Level.INFO).clear();
    }
    public void testSecurityConfigChangeEventFormattingForUserProfile() {
        final String requestId = randomRequestId();
        final String[] expectedRoles = randomArray(0, 4, String[]::new, () -> randomBoolean() ? null : randomAlphaOfLengthBetween(1, 4));
        final AuthorizationInfo authorizationInfo = () -> Map.of(PRINCIPAL_ROLES_FIELD_NAME, expectedRoles);
        final Authentication authentication = createAuthentication();
        final List<String> output = CapturingLogger.output(logger.getName(), Level.INFO);
        
        final ActivateProfileRequest activateProfileRequest = new ActivateProfileRequest();
        activateProfileRequest.getGrant().setType(randomFrom(randomAlphaOfLength(8), null));
        activateProfileRequest.getGrant().setUsername(randomFrom(randomAlphaOfLength(8), null));
        activateProfileRequest.getGrant().setPassword(randomFrom(new SecureString("password not exposed"), null));
        activateProfileRequest.getGrant().setAccessToken(randomFrom(new SecureString("access token not exposed"), null));
        auditTrail.accessGranted(requestId, authentication, ActivateProfileAction.NAME, activateProfileRequest, authorizationInfo);
        assertThat(output.size(), is(2));
        String generatedActivateAuditEventString = output.get(1);
        final StringBuilder activateAuditEventStringBuilder = new StringBuilder().append("\"put\":{\"grant\":{\"type\":");