Refactor variable names in git.yml for consistency and clarity

roles/common/tasks/git.yml

@@ -292,16 +292,16 @@
 #  Group [so36_server_dehydrated] reposotories
 # ---
 
-#- name: (git.yml) Install/Update sympa server repositories
-#  git:
-#    repo: '{{ item.repo }}'
-#    dest: '{{ item.dest }}'
-#  with_items: '{{ git_so36_dehydrated_repositories }}'
-#  loop_control:
-#    label: "{{ item.name }}"
-#  when: "groups['so36_server_dehydrated']|string is search(inventory_hostname)"
-#  tags:
-#    - git-so36-dehydrated-repositories
+# - name: (git.yml) Install/Update sympa server repositories
+#   git:
+#     repo: '{{ item.repo }}'
+#     dest: '{{ item.dest }}'
+#   with_items: '{{ git_so36_dehydrated_repositories }}'
+#   loop_control:
+#     label: "{{ item.name }}"
+#   when: "groups['so36_server_dehydrated']|string is search(inventory_hostname)"
+#   tags:
+#     - git-so36-dehydrated-repositories
 
 # ---
 #  Other (host specific) repositories
@@ -311,14 +311,14 @@
 - name: (git.yml) Check for host specific git vars file
   ansible.builtin.stat:
     path: "vars/git-{{ inventory_hostname }}.yml"
-  register: git_host_vars_file
+  register: common_git_host_vars_file
   tags:
     - git-other-repositories
 
 - name: (git.yml) Include only files matching git-<hostname>.yml (2.2)
   ansible.builtin.include_vars:
     file: "vars/git-{{ inventory_hostname }}.yml"
-  when: git_host_vars_file.stat.exists
+  when: common_git_host_vars_file.stat.exists
   tags:
     - git-other-repositories