core: Clean up pmap registry up correctly on volume/brick stop

This commit changes the following:
1. In glusterfs_handle_terminate, send out individual pmap signout
requests to glusterd for every brick.
2. Add another parameter to glusterfs_mgmt_pmap_signout function to
pass the brickname that needs to be removed from the pmap registry.
3. Make sure pmap_registry_search doesn't break out from the loop
iterating over the list of bricks per port if the first brick entry
corresponding to a port is whitespaced out.
4. Make sure the pmap registry entries are removed for other
daemons like snapd.

> Reviewed-on: https://review.gluster.org/16689
> Smoke: Gluster Build System <jenkins@build.gluster.org>
> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
> Reviewed-by: Gaurav Yadav <gyadav@redhat.com>
> Reviewed-by: Jeff Darcy <jdarcy@redhat.com>

(cherry picked from commit 1e3538baab7abc29ac329c78182b62558da56d98)

Change-Id: I69949874435b02699e5708dab811777ccb297174
BUG: 1427461
Signed-off-by: Samikshan Bairagya <samikshan@gmail.com>
Reviewed-on: https://review.gluster.org/16786
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>

0 files changed, 0 insertions, 0 deletions