extras/hookscripts: Remove %P from smb share path value.

We had added %P in the value for path in smb share definitions to
avoid ctdb errors. However, %P does not work well for windows
clients and they fail to access the share.

Solution for the original problem:
The error messages were being generated by a monitoring script that ctdb
runs. The script reads the path value from testparm and tests if it exists
in the local machine. This particular check does not hold valid for
virtual file system backends like gluster. There is no harm in asking
ctdb to not to check the existence of such backend and can be done by
setting the following config in ctdb.conf:

CTDB_SAMBA_SKIP_SHARE_CHECK=YES.

Change-Id: I91627c8a279126a5cc24c6347847f9bfbad53dd5
BUG: 1068776
Signed-off-by: Raghavendra Talur <rtalur@redhat.com>
Reviewed-on: http://review.gluster.org/7598
Reviewed-by: Jose A. Rivera <jarrpa@redhat.com>
Reviewed-by: Poornima G <pgurusid@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Harshavardhana <harsha@harshavardhana.net>