refactor: move yum repo management to Ansible role ansible_lza_install_common

tasks/configure_yum_repositories.yml

----
-- name: add EPEL repository
-  yum_repository:
-    name: "{{ item.name }}"
-    description: "{{ item.description }}"
-    baseurl: "{{ item.baseurl }}"
-    gpgcheck: "{{ item.gpgcheck | default('true') }}"
-    gpgkey: "{{ item.gpgkey | default(omit) }}"
-  loop:
-    - name: "epel"
-      description: EPEL YUM repo
-      baseurl: "https://download.fedoraproject.org/pub/epel/{{ ansible_distribution_major_version }}/x86_64/"
-      gpgkey: "https://dl.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL-{{ ansible_distribution_major_version }}"
-    - name: "slub"
-      description: SLUB YUM repo
-      baseurl: "http://sdvrhelrepo.slub-dresden.de/"
-      gpgcheck: "false"

tasks/main.yml

@@ -12,8 +12,6 @@
 
 ### COMMON TASKS
 
-- import_tasks: configure_yum_repositories.yml
-  tags: [yum, repositories]
 - import_tasks: install_packages.yml
   tags: [yum, packages]
 - import_tasks: create_users.yml