Put distro.conn.exit to the end of function
Put distro.conn.exit to the end of function

system.enable_service(distro.conn) is still needing the connection.

Signed-off-by: Dongmao Zhang <016deec4507c09b644a240896ecb8d8245b50987@gmail.com>

imzhulei/ceph-deploy,branto1/ceph-deploy,ceph/ceph-deploy,SUSE/ceph-deploy,shenhequnying/ceph-deploy,alfredodeza/ceph-deploy,SUSE/ceph-deploy,alfredodeza/ceph-deploy,jumpstarter-io/ceph-deploy,osynge/ceph-deploy,ceph/ceph-deploy,zhouyuan/ceph-deploy,ddiss/ceph-deploy,ddiss/ceph-deploy,rtulke/ceph-deploy,jumpstarter-io/ceph-deploy,SUSE/ceph-deploy-to-be-deleted,Vicente-Cheng/ceph-deploy,osynge/ceph-deploy,branto1/ceph-deploy,ktdreyer/ceph-deploy,trhoden/ceph-deploy,Vicente-Cheng/ceph-deploy,shenhequnying/ceph-deploy,imzhulei/ceph-deploy,isyippee/ceph-deploy,zhouyuan/ceph-deploy,ghxandsky/ceph-deploy,rtulke/ceph-deploy,codenrhoden/ceph-deploy,isyippee/ceph-deploy,codenrhoden/ceph-deploy,ghxandsky/ceph-deploy,trhoden/ceph-deploy,ktdreyer/ceph-deploy,SUSE/ceph-deploy-to-be-deleted