kea_dhcp(role): some fixes and removing arch part

- remove tags from tasks
- remove archlinux part
- use debian default package for kea

roles/kea_dhcp/tasks/install_debian.yml

@@ -1,22 +1,25 @@
 ---
-- name: Register isc-kea apt repository
-  become: true
-  register: kea_dhcp_repo
-  when: ansible_facts['distribution'] == "Debian"
-  ansible.builtin.deb822_repository:
-    name: "isc-{{ kea_dhcp__version_repo }}"
-    uris: "https://dl.cloudsmith.io/public/isc/{{ kea_dhcp__version_repo }}/deb/debian"
-    suites: any-version
-    components: main
-    signed_by: "https://dl.cloudsmith.io/public/isc/{{ kea_dhcp__version_repo }}/gpg.key"
-
 - name: Install Kea packages
   become: true
   when: ansible_facts['distribution'] == "Debian"
-  ansible.builtin.apt:
-    name:
-      - isc-kea-dhcp4
-      - isc-kea-dhcp6
-      - isc-kea-ctrl-agent
-      - isc-kea-admin
-    update_cache: "{{ kea_dhcp_install_repo.changed }}"
+  block:
+    - name: Install Kea dhcp4
+      when: kea_dhcp__dhcp4.enable
+      ansible.builtin.apt:
+        name:
+          - isc-kea-dhcp4
+    - name: Install Kea dhcp6
+      when: kea_dhcp__dhcp6.enable
+      ansible.builtin.apt:
+        name:
+          - isc-kea-dhcp6
+    - name: Install Kea ctrl agent
+      when: kea_dhcp__stork_agent.enable
+      ansible.builtin.apt:
+        name:
+          - isc-kea-ctrl-agent
+    - name: Install Kea admin
+      when: kea_dhcp__stork_agent.enable
+      ansible.builtin.apt:
+        name:
+          - isc-kea-admin