refactor condition to filter source git and rework parsing of version

roles/icingaweb2/tasks/main.yml

@@ -22,23 +22,16 @@
   ansible.builtin.set_fact:
     icingaweb2_git_packages: "{{ icingaweb2_git_packages + [item] }}"
   loop: "{{ icingaweb2_modules | dict2items }}" 
-  when: icingaweb2_modules is defined and item.value.enabled is true and item.value.source.startswith("git")
+  when: icingaweb2_modules is defined and item.value.enabled is true and (item.value.source | split(','))[0] == "git"
 
 - name: Include OS specific installation
   ansible.builtin.include_tasks: "install_on_{{ ansible_os_family | lower }}.yml"
 
-- name: Debug icingaweb2_packages
-  debug:
-      msg: "{{ (item.value.source | split (',') )[2] | default('HEAD') }}"
-  loop: "{{ icingaweb2_git_packages }}"
-  when: item.value.source.startswith('git')
-      # msg: "{{ icingaweb2_git_packages['test_module']['value'] }}"
-
 - name: Install Icingaweb2 Module from Git
   ansible.builtin.git:
     repo: "{{ (item.value.source | split(','))[1] }}"
     dest: "{{ icingaweb2_config['global']['module_path'] }}/{{ item.key }}"
-    version: "{{ (item.value.source | split(',') | last) if (item.value.source | split(',') | length) == 3 else 'HEAD'  }}"
+    version: "{{ (item.value.source | split(',')[2] | default(omit) }}"
   loop: "{{ icingaweb2_git_packages }}"
   when: icingaweb2_modules is defined and item.value.enabled is true and (item.value.source | split(','))[0] == "git"