ansible: fix owner/permissions for binary_tmp link

Set the owner and permissions for the `binary_tmp.git` link itself
instead of on the link target.

Author: richardlau

ansible/roles/jenkins-workspace/tasks/main.yml

@@ -6,6 +6,7 @@
 #
 
 - name: Run which git-shell
+  changed_when: false
   command: "which git-shell"
   register: which_git_shell
 
@@ -63,6 +64,7 @@
     state: link
     owner: "binary_tmp"
     group: "binary_tmp"
+    follow: false
     mode: 0755
 
 - name: Initialize Git repository