LU-6159 hsm: add CL_CLOSE to default changelog mask

LU-6159 hsm: add CL_CLOSE to default changelog mask

There's no point in ignoring CL_CLOSE by default in changelogs.
Robinhood needs these events else the database quickly
becomes out of sync. So let's have it by default.

Note that CL_CLOSE is not issued when the file was opened in read-only
mode.

Signed-off-by: frank zago <fzago@cray.com>
Change-Id: Ie5f42bc4413259e5079801a204e15125cde0c48b
Reviewed-on: http://review.whamcloud.com/13526
Tested-by: Jenkins
Reviewed-by: Henri Doreau <henri.doreau@cea.fr>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>