roles/common: add create git user

roles/common/tasks/main.yml

@@ -7,3 +7,12 @@
   yum: 
     name: libselinux-python
   become: yes
+
+- name: create system user
+  user:
+    name: git
+    comment: GitLab
+    home: /home/git
+    createhome: yes
+  become: yes
+