Allow openstack_hosts role to configure git safe.directory entries

This is defaulted to '*" and will be undefined when a CI specific
override is subsequently merged to the openstack-ansible repository.

Change-Id: I1c1dc35d8d59db4ae2b6770a620d91548a8a3734

defaults/main.yml

@@ -212,3 +212,6 @@ openstack_hosts_systemd_networkd_networks: []
 openstack_hosts_systemd_networkd_prefix: openstack-net
 openstack_hosts_systemd_services: []
 openstack_hosts_systemd_slice: "openstack-hosts"
+
+openstack_hosts_git_safe_directories:
+  - "*"

tasks/main.yml

@@ -169,7 +169,6 @@
     apply:
       tags:
         - openstack_hosts-config
-  when: ansible_facts['hostname'] != 'aio1'
 
 - name: Including openstack_hosts_systemd tasks
   include_tasks: openstack_hosts_systemd.yml

tasks/openstack_gitconfig.yml

@@ -29,6 +29,16 @@
     value: "{{ 'git/' ~ _git_version.stdout.split(' ')[2] ~ ' (osa/' ~ lookup('env', 'OSA_VERSION') ~ '/' ~ component | default('undefined') ~ ')' }}"
   when: _git_version.rc == 0
 
+- name: Configure git safe directories
+  git_config:
+    scope: system
+    name: safe.directory
+    value: "{{ item }}"
+  with_items: "{{ openstack_hosts_git_safe_directories }}"
+  when:
+    - _git_version.rc == 0
+    - openstack_hosts_git_safe_directories is defined
+
 - name: Write git config when git is not installed
   template:
     src: gitconfig.j2

templates/gitconfig.j2

@@ -1,2 +1,9 @@
 [http "https://opendev.org/"]
        userAgent = git/unknown (osa/{{ lookup('env', 'OSA_VERSION') }}/{{ component | default('undefined') }})
+
+{% if openstack_hosts_git_safe_directories is defined %}
+[safe]
+{% for dir in openstack_hosts_git_safe_directories %}
+       directory {{ dir }}
+{% endfor %}
+{% endif %}