devconfig: add gitconfig /mirror/ sanity check

When you leverage the use of /mirror/ say as an NFS server then your
system will use a git service to allow guests with libvirt to connect
to the NFS server through your own host. This works quite well, however
git will prevent access if the directory is not owned by you.

To fix this the *host*, ie, localhost, must trust the directories,
without this will fail on both the host and the guests:

/usr/bin/git ls-remote git://192.168.122.1/mirror/fstests.git -h refs/heads/HEAD

Signed-off-by: Luis Chamberlain <[email protected]>

Author: mcgrof

playbooks/roles/devconfig/tasks/main.yml

@@ -41,6 +41,40 @@
 
 # Distro agnostic stuff goes below
 
+- name: Check if /mirror directory exists on localhost
+  delegate_to: localhost
+  stat:
+    path: /mirror
+  register: mirror_dir
+  run_once: true
+
+- name: Create an empty gitconfig if it doesn't exist on the localhost
+  delegate_to: localhost
+  file:
+    path: "{{ dev_gitconfig_src }}"
+    state: touch
+    mode: '0644'
+  when:
+    - mirror_dir.stat.exists
+  run_once: true
+
+- name: Check if any safe.directory entries exist
+  delegate_to: localhost
+  command: git config --global --get-all safe.directory
+  register: git_safe_dirs
+  failed_when: false
+  changed_when: false
+  run_once: true
+  when: mirror_dir.stat.exists
+
+- name: Add safe.directory = * if not already set
+  delegate_to: localhost
+  command: git config --global --add safe.directory '*'
+  when:
+    - mirror_dir.stat.exists
+    - "'*' not in git_safe_dirs.stdout_lines"
+  run_once: true
+
 - name: Check if the developer has a git config
   delegate_to: localhost
   stat: