doc: Move glusterd.vol to extras/ directory

It's actually not documentation.

Change-Id: I30c84abc9a31edb2f849dd2d6ff6d3129d87392d
Signed-off-by: Lubomir Rintel <lubo.rintel@gooddata.com>
Reviewed-on: http://review.gluster.org/5474
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>

doc/Makefile.am

@@ -1,9 +1,6 @@
-EXTRA_DIST = glusterfs.8 mount.glusterfs.8 glusterd.vol gluster.8 \
+EXTRA_DIST = glusterfs.8 mount.glusterfs.8 gluster.8 \
 			glusterd.8 glusterfsd.8
 
-voldir = $(sysconfdir)/glusterfs
-vol_DATA = glusterd.vol
-
 man8_MANS = glusterfs.8 mount.glusterfs.8 gluster.8 glusterd.8 glusterfsd.8
 
 CLEANFILES =

extras/Makefile.am

@@ -8,9 +8,12 @@ confdir = $(sysconfdir)/glusterfs
 conf_DATA = glusterfs-logrotate gluster-rsyslog-7.2.conf gluster-rsyslog-5.8.conf \
 	logger.conf.example
 
+voldir = $(sysconfdir)/glusterfs
+vol_DATA = glusterd.vol
+
 EXTRA_DIST = specgen.scm MacOSX/Portfile glusterfs-mode.el glusterfs.vim  \
 	migrate-unify-to-distribute.sh backend-xattr-sanitize.sh          \
 	backend-cleanup.sh disk_usage_sync.sh quota-remove-xattr.sh       \
 	quota-metadata-cleanup.sh glusterfs-logrotate clear_xattrs.sh     \
 	group-virt.example glusterd-sysconfig gluster-rsyslog-7.2.conf    \
-	gluster-rsyslog-5.8.conf logger.conf.example
+	gluster-rsyslog-5.8.conf logger.conf.example glusterd.vol