Implementing IEP008 - contituency field

The change has been proposed and discussed over
a year ago

Author: kamil-certat

CHANGELOG.md

@@ -41,6 +41,10 @@ Please refer to the [NEWS](NEWS.md) for a list of changes which have an affect o
   ```
 - added `severity` field to help with triaging received events (PR#2575 by Kamil Mańkowski).
   To allow saving the field in PostgreSQL database in existing installations, the following schema update is necessary: `ALTER TABLE events ADD severity varchar(10);`.
+- Implementing [IEP008](https://github.com/certtools/ieps/tree/main/008) introducing the `constituency` field for easier identification in
+  multi-constituency setups. (PR#2573 by Kamil Mańkowski)
+  To use in current PostgreSQL installations, a schema update may be
+  necessary: `ALTER TABLE events ADD "constituency" text;`.
 
 ### Bots
 #### Collectors

intelmq/etc/harmonization.conf

@@ -388,6 +388,10 @@
         "tlp": {
             "description": "Traffic Light Protocol level of the event.",
             "type": "TLP"
+        },
+        "constituency": {
+            "description": "Internal identifier for multi-constituency setup",
+            "type": "String"
         }
     },
     "report": {