fix typo in lustre

Author: wtripp180901

ansible/roles/lustre/defaults/main.yml

@@ -7,7 +7,6 @@ lustre_mount_state: mounted
 lustre_mount_options: 'defaults,_netdev,noauto,x-systemd.automount,x-systemd.requires=lnet.service,nosuid,nodev'
 
 # below variables are for build and should not generally require changes
-lustre_repo: "https://github.com/lustre/lustre-release.git"
 lustre_build_packages:
   - "kernel-devel-{{ ansible_kernel }}"
   - git