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
LogEntryBuilder withRequestBody(ChangePasswordRequest changePasswordRequest) throws IOException {
            logEntry.with(EVENT_ACTION_FIELD_NAME, "change_password");
            XContentBuilder builder = JsonXContent.contentBuilder().humanReadable(true);
            builder.startObject()
                .startObject("password")
                .startObject("user")
                .field("name", changePasswordRequest.username())
                .endObject() 
                .endObject() 
                .endObject();
            logEntry.with(CHANGE_CONFIG_FIELD_NAME, Strings.toString(builder));
            return this;
        }
        LogEntryBuilder withRequestBody(PutRoleRequest putRoleRequest) throws IOException {
            logEntry.with(EVENT_ACTION_FIELD_NAME, "put_role");
            XContentBuilder builder = JsonXContent.contentBuilder().humanReadable(true);
            builder.startObject()
                .startObject("role")
                .field("name", putRoleRequest.name())
                
                
                .field("role_descriptor");
            withRoleDescriptor(builder, putRoleRequest.roleDescriptor());
            builder.endObject() 
                .endObject();
            logEntry.with(PUT_CONFIG_FIELD_NAME, Strings.toString(builder));
            return this;
        }
        LogEntryBuilder withRequestBody(PutRoleMappingRequest putRoleMappingRequest) throws IOException {
            logEntry.with(EVENT_ACTION_FIELD_NAME, "put_role_mapping");