Remove /var/lib/ceph from updatedb

This stops updatedb from indexing the storage locations

Change-Id: Idd77f0fc087a06af874d2865bfec8c319a0b15dd
Closes-bug: 1520226

files/updatedb.conf

+# This file is owned by the Ceph charm and could be replaced at any time
+
+PRUNE_BIND_MOUNTS="yes"
+# PRUNENAMES=".git .bzr .hg .svn"
+PRUNEPATHS="/tmp /var/spool /media /home/.ecryptfs /var/lib/schroot /var/lib/ceph"
+PRUNEFS="NFS nfs nfs4 rpc_pipefs afs binfmt_misc proc smbfs autofs iso9660 ncpfs coda devpts ftpfs devfs mfs shfs sysfs cifs lustre tmpfs usbfs udf fuse.glusterfs fuse.sshfs curlftpfs ecryptfs fusesmb devtmpfs"

hooks/ceph_hooks.py

@@ -44,6 +44,7 @@ from charmhelpers.core.host import (
     umount,
     mkdir,
     cmp_pkgrevno,
+    rsync,
     service_reload,
     service_restart)
 from charmhelpers.fetch import (
@@ -327,6 +328,10 @@ def config_changed():
         umount(e_mountpoint)
     prepare_disks_and_activate()
     install_apparmor_profile()
+    script = os.path.join('/etc', 'updatedb.conf')
+    rsync(os.path.join(os.getenv('CHARM_DIR'), 'files',
+                       'updatedb.conf'),
+          script)
 
 
 @hooks.hook('storage.real')