add regions (#68)

Co-authored-by: Kvrivishvili, Iustina <iustina.kvrivishvili@t-systems.com>
Reviewed-on: #68
Reviewed-by: Martynov, Sergei <smartyno@noreply.gitea.eco.tsi-dev.otc-service.com>
Reviewed-by: Tino Schreiber <tino.schreiber@t-systems.com>
Co-authored-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
Co-committed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>

otc_metadata/data/cloud_environments/eu_de.yaml

@@ -1,4 +1,10 @@
 ---
 name: eu_de
 internal_org: docs
-public_org: opentelekomcloud-docs
+public_org: opentelekomcloud-docs
+regions:
+  - eu-de
+affected_locations:
+  - "EU-DE-01 AZ1 (Germany/Biere)"
+  - "EU-DE-02 AZ2 (Germany/Magdeburg)"
+  - "EU-DE-03 AZ3 (Germany/Biere)"