cluster/afr: Fix excessive logging in glfsheal log file

Wrong afr_local_t instance was being used in the missing entry sh
check in afr_self_heal(), which was leading to entrylk failure messages
of the following kind in glfsheal logfile:

[2014-10-21 12:39:04.109875] I
[afr-self-heal-common.c:2146:afr_sh_post_nb_entrylk_missing_entry_sh_cbk]
0-vol-replicate-1: Non blocking entrylks failed

The fix involves sending the right "local" to
afr_can_start_missing_entry_gfid_self_heal().

After fixing this, there were two more codepaths giving out too many log messages
of the following kinds:

[2014-10-21 22:19:29.568533] E [afr-self-heal-data.c:1611:afr_sh_data_open_cbk]
0-dis-rep-replicate-1: open of 8a858b02-0fc7-4713-9f61-8ca28dea82c0
failed on child dis-rep-client-2 (Stale file handle)

[2014-10-21 22:19:29.577948] E [afr-self-heal-entry.c:2353:afr_sh_post_nonblocking_entry_cbk]
0-dis-rep-replicate-1: Non Blocking entrylks failed for ff9c82c4-5c0c-4ed9-b745-604a28dc352d.

which are also fixed appropriately as part of this patch.

Change-Id: Idd8d8e5735ee7a4ac36f369525f96e53276e0859
BUG: 1153629
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/8965
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Niels de Vos <ndevos@redhat.com>